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Logarithm Table for base 80

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This page shows the logarithm table for base 80, in blocks of 100 values — each block covers one whole number N (its row lists N.0 through N.9, and each row's 10 columns walk the hundredths digit 0 through 9). Hover any cell to trace it back to its row and column, or print a block directly from its own header.

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Logarithm Table for base 80 — N = 1.00–1.99
N.i 0 1 2 3 4 5 6 7 8 9
1.0 0.000000 0.002271 0.004519 0.006745 0.008950 0.011134 0.013297 0.015440 0.017563 0.019666
1.1 0.021750 0.023815 0.025862 0.027891 0.029901 0.031894 0.033870 0.035829 0.037771 0.039697
1.2 0.041607 0.043501 0.045379 0.047242 0.049089 0.050922 0.052741 0.054545 0.056335 0.058111
1.3 0.059873 0.061622 0.063357 0.065079 0.066789 0.068485 0.070170 0.071841 0.073501 0.075149
1.4 0.076785 0.078409 0.080022 0.081623 0.083213 0.084793 0.086361 0.087919 0.089466 0.091003
1.5 0.092529 0.094045 0.095552 0.097048 0.098535 0.100012 0.101479 0.102938 0.104387 0.105826
1.6 0.107257 0.108679 0.110092 0.111496 0.112892 0.114279 0.115658 0.117029 0.118391 0.119746
1.7 0.121092 0.122430 0.123761 0.125084 0.126399 0.127707 0.129007 0.130300 0.131586 0.132864
1.8 0.134136 0.135400 0.136657 0.137908 0.139151 0.140388 0.141619 0.142842 0.144059 0.145270
1.9 0.146474 0.147672 0.148864 0.150049 0.151229 0.152402 0.153569 0.154731 0.155886 0.157036

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Logarithm Table for base 80 — N = 2.00–2.99
N.i 0 1 2 3 4 5 6 7 8 9
2.0 0.158180 0.159318 0.160450 0.161577 0.162699 0.163815 0.164925 0.166030 0.167130 0.168224
2.1 0.169314 0.170398 0.171477 0.172551 0.173620 0.174684 0.175742 0.176797 0.177846 0.178890
2.2 0.179930 0.180965 0.181995 0.183021 0.184042 0.185058 0.186070 0.187078 0.188081 0.189080
2.3 0.190074 0.191064 0.192050 0.193031 0.194009 0.194982 0.195951 0.196916 0.197877 0.198833
2.4 0.199786 0.200735 0.201680 0.202621 0.203558 0.204492 0.205421 0.206347 0.207269 0.208187
2.5 0.209102 0.210013 0.210920 0.211824 0.212724 0.213621 0.214514 0.215404 0.216290 0.217173
2.6 0.218052 0.218928 0.219801 0.220670 0.221537 0.222399 0.223259 0.224115 0.224968 0.225818
2.7 0.226665 0.227509 0.228349 0.229187 0.230021 0.230852 0.231681 0.232506 0.233328 0.234148
2.8 0.234964 0.235778 0.236588 0.237396 0.238201 0.239003 0.239803 0.240599 0.241393 0.242184
2.9 0.242972 0.243758 0.244541 0.245321 0.246098 0.246873 0.247646 0.248415 0.249182 0.249947
Logarithm Table for base 80 — N = 3.00–3.99
N.i 0 1 2 3 4 5 6 7 8 9
3.0 0.250709 0.251468 0.252225 0.252979 0.253731 0.254481 0.255228 0.255972 0.256714 0.257454
3.1 0.258192 0.258926 0.259659 0.260389 0.261117 0.261843 0.262566 0.263287 0.264006 0.264722
3.2 0.265437 0.266149 0.266859 0.267566 0.268272 0.268975 0.269676 0.270375 0.271072 0.271766
3.3 0.272459 0.273149 0.273838 0.274524 0.275208 0.275891 0.276571 0.277249 0.277925 0.278599
3.4 0.279272 0.279942 0.280610 0.281276 0.281941 0.282603 0.283264 0.283922 0.284579 0.285234
3.5 0.285887 0.286538 0.287187 0.287834 0.288480 0.289124 0.289766 0.290406 0.291044 0.291681
3.6 0.292315 0.292948 0.293580 0.294209 0.294837 0.295463 0.296087 0.296710 0.297331 0.297950
3.7 0.298568 0.299184 0.299798 0.300411 0.301022 0.301631 0.302239 0.302845 0.303450 0.304052
3.8 0.304654 0.305254 0.305852 0.306448 0.307043 0.307637 0.308229 0.308819 0.309408 0.309996
3.9 0.310582 0.311166 0.311749 0.312330 0.312910 0.313489 0.314066 0.314641 0.315215 0.315788
Logarithm Table for base 80 — N = 4.00–4.99
N.i 0 1 2 3 4 5 6 7 8 9
4.0 0.316359 0.316929 0.317497 0.318064 0.318630 0.319194 0.319757 0.320318 0.320878 0.321437
4.1 0.321994 0.322550 0.323105 0.323658 0.324210 0.324760 0.325310 0.325857 0.326404 0.326949
4.2 0.327493 0.328036 0.328577 0.329118 0.329656 0.330194 0.330730 0.331265 0.331799 0.332332
4.3 0.332863 0.333393 0.333922 0.334450 0.334976 0.335501 0.336025 0.336548 0.337070 0.337590
4.4 0.338109 0.338627 0.339144 0.339660 0.340175 0.340688 0.341200 0.341711 0.342221 0.342730
4.5 0.343238 0.343744 0.344250 0.344754 0.345257 0.345759 0.346260 0.346760 0.347259 0.347757
4.6 0.348254 0.348749 0.349244 0.349737 0.350229 0.350721 0.351211 0.351700 0.352188 0.352675
4.7 0.353161 0.353646 0.354130 0.354613 0.355095 0.355576 0.356056 0.356535 0.357013 0.357490
4.8 0.357966 0.358441 0.358915 0.359388 0.359860 0.360331 0.360801 0.361270 0.361738 0.362205
4.9 0.362671 0.363137 0.363601 0.364064 0.364527 0.364988 0.365449 0.365908 0.366367 0.366825
Logarithm Table for base 80 — N = 5.00–5.99
N.i 0 1 2 3 4 5 6 7 8 9
5.0 0.367282 0.367738 0.368193 0.368647 0.369100 0.369552 0.370004 0.370454 0.370904 0.371353
5.1 0.371801 0.372248 0.372694 0.373139 0.373584 0.374027 0.374470 0.374912 0.375353 0.375793
5.2 0.376232 0.376670 0.377108 0.377545 0.377981 0.378416 0.378850 0.379283 0.379716 0.380148
5.3 0.380579 0.381009 0.381438 0.381867 0.382295 0.382722 0.383148 0.383573 0.383998 0.384422
5.4 0.384845 0.385267 0.385688 0.386109 0.386529 0.386948 0.387366 0.387784 0.388201 0.388617
5.5 0.389032 0.389446 0.389860 0.390273 0.390686 0.391097 0.391508 0.391918 0.392327 0.392736
5.6 0.393144 0.393551 0.393957 0.394363 0.394768 0.395172 0.395576 0.395979 0.396381 0.396782
5.7 0.397183 0.397583 0.397982 0.398381 0.398779 0.399176 0.399573 0.399968 0.400364 0.400758
5.8 0.401152 0.401545 0.401937 0.402329 0.402720 0.403111 0.403500 0.403890 0.404278 0.404666
5.9 0.405053 0.405439 0.405825 0.406210 0.406595 0.406979 0.407362 0.407744 0.408126 0.408508
Logarithm Table for base 80 — N = 6.00–6.99
N.i 0 1 2 3 4 5 6 7 8 9
6.0 0.408888 0.409268 0.409648 0.410026 0.410405 0.410782 0.411159 0.411535 0.411911 0.412286
6.1 0.412660 0.413034 0.413407 0.413780 0.414152 0.414523 0.414894 0.415264 0.415634 0.416003
6.2 0.416371 0.416739 0.417106 0.417473 0.417839 0.418204 0.418569 0.418933 0.419297 0.419660
6.3 0.420022 0.420384 0.420746 0.421107 0.421467 0.421826 0.422186 0.422544 0.422902 0.423259
6.4 0.423616 0.423973 0.424328 0.424684 0.425038 0.425392 0.425746 0.426099 0.426451 0.426803
6.5 0.427154 0.427505 0.427856 0.428205 0.428554 0.428903 0.429251 0.429599 0.429946 0.430293
6.6 0.430639 0.430984 0.431329 0.431674 0.432017 0.432361 0.432704 0.433046 0.433388 0.433729
6.7 0.434070 0.434411 0.434750 0.435090 0.435429 0.435767 0.436105 0.436442 0.436779 0.437115
6.8 0.437451 0.437787 0.438121 0.438456 0.438790 0.439123 0.439456 0.439788 0.440120 0.440452
6.9 0.440783 0.441113 0.441443 0.441773 0.442102 0.442430 0.442758 0.443086 0.443413 0.443740
Logarithm Table for base 80 — N = 7.00–7.99
N.i 0 1 2 3 4 5 6 7 8 9
7.0 0.444066 0.444392 0.444717 0.445042 0.445367 0.445690 0.446014 0.446337 0.446660 0.446982
7.1 0.447303 0.447624 0.447945 0.448265 0.448585 0.448905 0.449224 0.449542 0.449860 0.450178
7.2 0.450495 0.450812 0.451128 0.451444 0.451759 0.452074 0.452389 0.452703 0.453017 0.453330
7.3 0.453643 0.453955 0.454267 0.454579 0.454890 0.455200 0.455511 0.455821 0.456130 0.456439
7.4 0.456748 0.457056 0.457364 0.457671 0.457978 0.458284 0.458590 0.458896 0.459201 0.459506
7.5 0.459811 0.460115 0.460419 0.460722 0.461025 0.461327 0.461629 0.461931 0.462232 0.462533
7.6 0.462833 0.463133 0.463433 0.463732 0.464031 0.464330 0.464628 0.464926 0.465223 0.465520
7.7 0.465817 0.466113 0.466408 0.466704 0.466999 0.467294 0.467588 0.467882 0.468175 0.468468
7.8 0.468761 0.469054 0.469346 0.469637 0.469928 0.470219 0.470510 0.470800 0.471090 0.471379
7.9 0.471668 0.471957 0.472245 0.472533 0.472821 0.473108 0.473395 0.473681 0.473968 0.474253
Logarithm Table for base 80 — N = 8.00–8.99
N.i 0 1 2 3 4 5 6 7 8 9
8.0 0.474539 0.474824 0.475109 0.475393 0.475677 0.475961 0.476244 0.476527 0.476809 0.477092
8.1 0.477374 0.477655 0.477936 0.478217 0.478498 0.478778 0.479058 0.479337 0.479616 0.479895
8.2 0.480174 0.480452 0.480730 0.481007 0.481284 0.481561 0.481837 0.482114 0.482389 0.482665
8.3 0.482940 0.483215 0.483489 0.483763 0.484037 0.484311 0.484584 0.484856 0.485129 0.485401
8.4 0.485673 0.485944 0.486216 0.486486 0.486757 0.487027 0.487297 0.487567 0.487836 0.488105
8.5 0.488374 0.488642 0.488910 0.489178 0.489445 0.489712 0.489979 0.490245 0.490511 0.490777
8.6 0.491043 0.491308 0.491573 0.491837 0.492102 0.492366 0.492629 0.492893 0.493156 0.493418
8.7 0.493681 0.493943 0.494205 0.494466 0.494728 0.494989 0.495249 0.495510 0.495770 0.496030
8.8 0.496289 0.496548 0.496807 0.497066 0.497324 0.497582 0.497840 0.498097 0.498354 0.498611
8.9 0.498868 0.499124 0.499380 0.499636 0.499891 0.500146 0.500401 0.500655 0.500910 0.501164
Logarithm Table for base 80 — N = 9.00–9.99
N.i 0 1 2 3 4 5 6 7 8 9
9.0 0.501417 0.501671 0.501924 0.502177 0.502429 0.502682 0.502934 0.503186 0.503437 0.503688
9.1 0.503939 0.504190 0.504440 0.504690 0.504940 0.505190 0.505439 0.505688 0.505936 0.506185
9.2 0.506433 0.506681 0.506929 0.507176 0.507423 0.507670 0.507917 0.508163 0.508409 0.508655
9.3 0.508900 0.509145 0.509390 0.509635 0.509880 0.510124 0.510368 0.510611 0.510855 0.511098
9.4 0.511341 0.511584 0.511826 0.512068 0.512310 0.512552 0.512793 0.513034 0.513275 0.513516
9.5 0.513756 0.513996 0.514236 0.514475 0.514715 0.514954 0.515193 0.515431 0.515670 0.515908
9.6 0.516145 0.516383 0.516620 0.516857 0.517094 0.517331 0.517567 0.517803 0.518039 0.518275
9.7 0.518510 0.518745 0.518980 0.519215 0.519449 0.519684 0.519918 0.520151 0.520385 0.520618
9.8 0.520851 0.521084 0.521316 0.521548 0.521780 0.522012 0.522244 0.522475 0.522706 0.522937
9.9 0.523168 0.523398 0.523628 0.523858 0.524088 0.524317 0.524547 0.524776 0.525004 0.525233
Logarithm Table for base 80 — N = 10.00–10.99
N.i 0 1 2 3 4 5 6 7 8 9
10.0 0.525461 0.525689 0.525917 0.526145 0.526372 0.526599 0.526826 0.527053 0.527280 0.527506
10.1 0.527732 0.527958 0.528183 0.528409 0.528634 0.528859 0.529084 0.529308 0.529532 0.529756
10.2 0.529980 0.530204 0.530427 0.530650 0.530873 0.531096 0.531319 0.531541 0.531763 0.531985
10.3 0.532207 0.532428 0.532649 0.532870 0.533091 0.533312 0.533532 0.533752 0.533972 0.534192
10.4 0.534412 0.534631 0.534850 0.535069 0.535288 0.535506 0.535724 0.535942 0.536160 0.536378
10.5 0.536595 0.536813 0.537030 0.537246 0.537463 0.537679 0.537896 0.538112 0.538327 0.538543
10.6 0.538758 0.538974 0.539189 0.539403 0.539618 0.539832 0.540047 0.540261 0.540474 0.540688
10.7 0.540901 0.541114 0.541327 0.541540 0.541753 0.541965 0.542177 0.542389 0.542601 0.542813
10.8 0.543024 0.543235 0.543446 0.543657 0.543868 0.544078 0.544288 0.544498 0.544708 0.544918
10.9 0.545127 0.545337 0.545546 0.545755 0.545963 0.546172 0.546380 0.546588 0.546796 0.547004
Logarithm Table for base 80 — N = 11.00–11.99
N.i 0 1 2 3 4 5 6 7 8 9
11.0 0.547211 0.547419 0.547626 0.547833 0.548040 0.548246 0.548453 0.548659 0.548865 0.549071
11.1 0.549277 0.549482 0.549688 0.549893 0.550098 0.550302 0.550507 0.550711 0.550916 0.551120
11.2 0.551323 0.551527 0.551731 0.551934 0.552137 0.552340 0.552543 0.552745 0.552948 0.553150
11.3 0.553352 0.553554 0.553755 0.553957 0.554158 0.554359 0.554560 0.554761 0.554962 0.555162
11.4 0.555363 0.555563 0.555763 0.555962 0.556162 0.556361 0.556560 0.556759 0.556958 0.557157
11.5 0.557356 0.557554 0.557752 0.557950 0.558148 0.558346 0.558543 0.558740 0.558938 0.559135
11.6 0.559331 0.559528 0.559725 0.559921 0.560117 0.560313 0.560509 0.560704 0.560900 0.561095
11.7 0.561290 0.561485 0.561680 0.561875 0.562069 0.562263 0.562458 0.562652 0.562845 0.563039
11.8 0.563232 0.563426 0.563619 0.563812 0.564005 0.564197 0.564390 0.564582 0.564774 0.564966
11.9 0.565158 0.565350 0.565541 0.565733 0.565924 0.566115 0.566306 0.566497 0.566687 0.566878
Logarithm Table for base 80 — N = 12.00–12.99
N.i 0 1 2 3 4 5 6 7 8 9
12.0 0.567068 0.567258 0.567448 0.567638 0.567827 0.568017 0.568206 0.568395 0.568584 0.568773
12.1 0.568962 0.569150 0.569339 0.569527 0.569715 0.569903 0.570091 0.570278 0.570466 0.570653
12.2 0.570840 0.571027 0.571214 0.571400 0.571587 0.571773 0.571960 0.572146 0.572332 0.572517
12.3 0.572703 0.572888 0.573074 0.573259 0.573444 0.573629 0.573813 0.573998 0.574182 0.574367
12.4 0.574551 0.574735 0.574918 0.575102 0.575286 0.575469 0.575652 0.575835 0.576018 0.576201
12.5 0.576384 0.576566 0.576749 0.576931 0.577113 0.577295 0.577476 0.577658 0.577840 0.578021
12.6 0.578202 0.578383 0.578564 0.578745 0.578925 0.579106 0.579286 0.579466 0.579646 0.579826
12.7 0.580006 0.580186 0.580365 0.580544 0.580724 0.580903 0.581082 0.581260 0.581439 0.581618
12.8 0.581796 0.581974 0.582152 0.582330 0.582508 0.582686 0.582863 0.583041 0.583218 0.583395
12.9 0.583572 0.583749 0.583925 0.584102 0.584278 0.584455 0.584631 0.584807 0.584983 0.585158
Logarithm Table for base 80 — N = 13.00–13.99
N.i 0 1 2 3 4 5 6 7 8 9
13.0 0.585334 0.585510 0.585685 0.585860 0.586035 0.586210 0.586385 0.586560 0.586734 0.586908
13.1 0.587083 0.587257 0.587431 0.587605 0.587778 0.587952 0.588126 0.588299 0.588472 0.588645
13.2 0.588818 0.588991 0.589164 0.589336 0.589509 0.589681 0.589853 0.590025 0.590197 0.590369
13.3 0.590540 0.590712 0.590883 0.591055 0.591226 0.591397 0.591568 0.591738 0.591909 0.592080
13.4 0.592250 0.592420 0.592590 0.592760 0.592930 0.593100 0.593269 0.593439 0.593608 0.593777
13.5 0.593947 0.594116 0.594284 0.594453 0.594622 0.594790 0.594959 0.595127 0.595295 0.595463
13.6 0.595631 0.595798 0.595966 0.596134 0.596301 0.596468 0.596635 0.596802 0.596969 0.597136
13.7 0.597303 0.597469 0.597635 0.597802 0.597968 0.598134 0.598300 0.598466 0.598631 0.598797
13.8 0.598962 0.599128 0.599293 0.599458 0.599623 0.599788 0.599952 0.600117 0.600281 0.600446
13.9 0.600610 0.600774 0.600938 0.601102 0.601266 0.601429 0.601593 0.601756 0.601920 0.602083
Logarithm Table for base 80 — N = 14.00–14.99
N.i 0 1 2 3 4 5 6 7 8 9
14.0 0.602246 0.602409 0.602572 0.602734 0.602897 0.603059 0.603222 0.603384 0.603546 0.603708
14.1 0.603870 0.604032 0.604194 0.604355 0.604517 0.604678 0.604839 0.605000 0.605161 0.605322
14.2 0.605483 0.605643 0.605804 0.605964 0.606125 0.606285 0.606445 0.606605 0.606765 0.606925
14.3 0.607084 0.607244 0.607403 0.607563 0.607722 0.607881 0.608040 0.608199 0.608357 0.608516
14.4 0.608675 0.608833 0.608991 0.609150 0.609308 0.609466 0.609623 0.609781 0.609939 0.610096
14.5 0.610254 0.610411 0.610568 0.610726 0.610883 0.611039 0.611196 0.611353 0.611509 0.611666
14.6 0.611822 0.611979 0.612135 0.612291 0.612447 0.612602 0.612758 0.612914 0.613069 0.613225
14.7 0.613380 0.613535 0.613690 0.613845 0.614000 0.614155 0.614310 0.614464 0.614619 0.614773
14.8 0.614927 0.615081 0.615235 0.615389 0.615543 0.615697 0.615850 0.616004 0.616157 0.616311
14.9 0.616464 0.616617 0.616770 0.616923 0.617076 0.617228 0.617381 0.617533 0.617686 0.617838
Logarithm Table for base 80 — N = 15.00–15.99
N.i 0 1 2 3 4 5 6 7 8 9
15.0 0.617990 0.618142 0.618294 0.618446 0.618598 0.618750 0.618901 0.619053 0.619204 0.619355
15.1 0.619507 0.619658 0.619809 0.619960 0.620110 0.620261 0.620412 0.620562 0.620713 0.620863
15.2 0.621013 0.621163 0.621313 0.621463 0.621613 0.621762 0.621912 0.622062 0.622211 0.622360
15.3 0.622509 0.622659 0.622808 0.622956 0.623105 0.623254 0.623403 0.623551 0.623700 0.623848
15.4 0.623996 0.624144 0.624292 0.624440 0.624588 0.624736 0.624883 0.625031 0.625179 0.625326
15.5 0.625473 0.625620 0.625767 0.625914 0.626061 0.626208 0.626355 0.626501 0.626648 0.626794
15.6 0.626941 0.627087 0.627233 0.627379 0.627525 0.627671 0.627817 0.627962 0.628108 0.628253
15.7 0.628399 0.628544 0.628689 0.628835 0.628980 0.629125 0.629269 0.629414 0.629559 0.629703
15.8 0.629848 0.629992 0.630137 0.630281 0.630425 0.630569 0.630713 0.630857 0.631000 0.631144
15.9 0.631288 0.631431 0.631574 0.631718 0.631861 0.632004 0.632147 0.632290 0.632433 0.632576
Logarithm Table for base 80 — N = 16.00–16.99
N.i 0 1 2 3 4 5 6 7 8 9
16.0 0.632718 0.632861 0.633003 0.633146 0.633288 0.633430 0.633573 0.633715 0.633857 0.633998
16.1 0.634140 0.634282 0.634424 0.634565 0.634706 0.634848 0.634989 0.635130 0.635271 0.635412
16.2 0.635553 0.635694 0.635835 0.635975 0.636116 0.636256 0.636397 0.636537 0.636677 0.636818
16.3 0.636958 0.637098 0.637237 0.637377 0.637517 0.637657 0.637796 0.637936 0.638075 0.638214
16.4 0.638353 0.638492 0.638631 0.638770 0.638909 0.639048 0.639187 0.639325 0.639464 0.639602
16.5 0.639741 0.639879 0.640017 0.640155 0.640293 0.640431 0.640569 0.640707 0.640844 0.640982
16.6 0.641119 0.641257 0.641394 0.641532 0.641669 0.641806 0.641943 0.642080 0.642217 0.642353
16.7 0.642490 0.642627 0.642763 0.642900 0.643036 0.643172 0.643309 0.643445 0.643581 0.643717
16.8 0.643853 0.643988 0.644124 0.644260 0.644395 0.644531 0.644666 0.644801 0.644937 0.645072
16.9 0.645207 0.645342 0.645477 0.645612 0.645746 0.645881 0.646016 0.646150 0.646285 0.646419
Logarithm Table for base 80 — N = 17.00–17.99
N.i 0 1 2 3 4 5 6 7 8 9
17.0 0.646553 0.646687 0.646822 0.646956 0.647090 0.647223 0.647357 0.647491 0.647625 0.647758
17.1 0.647892 0.648025 0.648158 0.648292 0.648425 0.648558 0.648691 0.648824 0.648957 0.649090
17.2 0.649222 0.649355 0.649487 0.649620 0.649752 0.649885 0.650017 0.650149 0.650281 0.650413
17.3 0.650545 0.650677 0.650809 0.650941 0.651072 0.651204 0.651335 0.651467 0.651598 0.651729
17.4 0.651861 0.651992 0.652123 0.652254 0.652385 0.652515 0.652646 0.652777 0.652907 0.653038
17.5 0.653168 0.653299 0.653429 0.653559 0.653689 0.653819 0.653949 0.654079 0.654209 0.654339
17.6 0.654469 0.654598 0.654728 0.654857 0.654987 0.655116 0.655245 0.655374 0.655504 0.655633
17.7 0.655762 0.655890 0.656019 0.656148 0.656277 0.656405 0.656534 0.656662 0.656791 0.656919
17.8 0.657047 0.657175 0.657303 0.657432 0.657559 0.657687 0.657815 0.657943 0.658071 0.658198
17.9 0.658326 0.658453 0.658581 0.658708 0.658835 0.658962 0.659089 0.659216 0.659343 0.659470
Logarithm Table for base 80 — N = 18.00–18.99
N.i 0 1 2 3 4 5 6 7 8 9
18.0 0.659597 0.659724 0.659850 0.659977 0.660104 0.660230 0.660356 0.660483 0.660609 0.660735
18.1 0.660861 0.660987 0.661113 0.661239 0.661365 0.661491 0.661617 0.661742 0.661868 0.661993
18.2 0.662119 0.662244 0.662369 0.662495 0.662620 0.662745 0.662870 0.662995 0.663120 0.663244
18.3 0.663369 0.663494 0.663618 0.663743 0.663867 0.663992 0.664116 0.664240 0.664365 0.664489
18.4 0.664613 0.664737 0.664861 0.664984 0.665108 0.665232 0.665356 0.665479 0.665603 0.665726
18.5 0.665850 0.665973 0.666096 0.666219 0.666342 0.666466 0.666589 0.666711 0.666834 0.666957
18.6 0.667080 0.667202 0.667325 0.667448 0.667570 0.667692 0.667815 0.667937 0.668059 0.668181
18.7 0.668303 0.668425 0.668547 0.668669 0.668791 0.668913 0.669034 0.669156 0.669278 0.669399
18.8 0.669521 0.669642 0.669763 0.669884 0.670006 0.670127 0.670248 0.670369 0.670490 0.670610
18.9 0.670731 0.670852 0.670973 0.671093 0.671214 0.671334 0.671454 0.671575 0.671695 0.671815
Logarithm Table for base 80 — N = 19.00–19.99
N.i 0 1 2 3 4 5 6 7 8 9
19.0 0.671935 0.672056 0.672176 0.672295 0.672415 0.672535 0.672655 0.672775 0.672894 0.673014
19.1 0.673133 0.673253 0.673372 0.673492 0.673611 0.673730 0.673849 0.673968 0.674087 0.674206
19.2 0.674325 0.674444 0.674563 0.674681 0.674800 0.674919 0.675037 0.675156 0.675274 0.675392
19.3 0.675511 0.675629 0.675747 0.675865 0.675983 0.676101 0.676219 0.676337 0.676454 0.676572
19.4 0.676690 0.676807 0.676925 0.677042 0.677160 0.677277 0.677395 0.677512 0.677629 0.677746
19.5 0.677863 0.677980 0.678097 0.678214 0.678331 0.678448 0.678564 0.678681 0.678797 0.678914
19.6 0.679030 0.679147 0.679263 0.679379 0.679496 0.679612 0.679728 0.679844 0.679960 0.680076
19.7 0.680192 0.680308 0.680423 0.680539 0.680655 0.680770 0.680886 0.681001 0.681117 0.681232
19.8 0.681347 0.681463 0.681578 0.681693 0.681808 0.681923 0.682038 0.682153 0.682267 0.682382
19.9 0.682497 0.682612 0.682726 0.682841 0.682955 0.683070 0.683184 0.683298 0.683412 0.683527
Logarithm Table for base 80 — N = 20.00–20.99
N.i 0 1 2 3 4 5 6 7 8 9
20.0 0.683641 0.683755 0.683869 0.683983 0.684097 0.684211 0.684324 0.684438 0.684552 0.684665
20.1 0.684779 0.684893 0.685006 0.685119 0.685233 0.685346 0.685459 0.685572 0.685685 0.685799
20.2 0.685912 0.686024 0.686137 0.686250 0.686363 0.686476 0.686588 0.686701 0.686814 0.686926
20.3 0.687038 0.687151 0.687263 0.687375 0.687488 0.687600 0.687712 0.687824 0.687936 0.688048
20.4 0.688160 0.688272 0.688383 0.688495 0.688607 0.688719 0.688830 0.688942 0.689053 0.689164
20.5 0.689276 0.689387 0.689498 0.689610 0.689721 0.689832 0.689943 0.690054 0.690165 0.690275
20.6 0.690386 0.690497 0.690608 0.690718 0.690829 0.690940 0.691050 0.691160 0.691271 0.691381
20.7 0.691491 0.691602 0.691712 0.691822 0.691932 0.692042 0.692152 0.692262 0.692372 0.692481
20.8 0.692591 0.692701 0.692810 0.692920 0.693030 0.693139 0.693249 0.693358 0.693467 0.693576
20.9 0.693686 0.693795 0.693904 0.694013 0.694122 0.694231 0.694340 0.694449 0.694558 0.694666

Other Bases

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