1261
Everything about the number 1261 — its names, how to write it in other bases and numeral systems, and what makes it interesting mathematically.
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Names of 1261
| Nominal | 1261 |
| Cardinal | one thousand two hundred sixty-one |
| Ordinal | 1,261st |
| This number as US currency | one thousand two hundred sixty-one dollars |
Properties (and some facts) of 1261
| Is 1261 an odd number? | 1261 is an odd number |
| Is 1261 an even number? | 1261 is not an even number |
| Is 1261 a palindrome? | 1261 is not a palindrome |
| Is 1261 a triangle number? | 1261 is not a triangle number |
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1261 in other bases
| Base 2 (Binary) | 10011101101 |
| Base 3 (Ternary) | 1201201 |
| Base 4 (Quaternary) | 103231 |
| Base 5 (Quinary) | 20021 |
| Base 6 (Senary) | 5501 |
| Base 8 (Octal) | 2355 |
| Base 12 (Duodecimal) | 891 |
| Base 16 (Hexadecimal) | 4ED |
| Base 20 (Vigesimal) | 331 |
Primes and factors tests for 1261
| Is 1261 a prime number? | 1261 is not a prime number |
| Is 1261 a perfect number? | 1261 is not a perfect number |
| Is 1261 a Mersenne prime? | 1261 is not a Mersenne prime |
| Is 1261 a Fermat prime? | 1261 is not a Fermat prime |
| Is 1261 a Fibonacci prime? | 1261 is not a Fibonacci prime |
| Is 1261 a partition prime? | 1261 is not a partition prime |
| Is 1261 a Pell prime? | 1261 is not a Pell prime |
| Prime Factors | Prime factors of 1261 |
1261 in other numeral systems
| 1261 in Roman numerals | MCCLXI |
| 1261 in Chinese numerals | 壹仟貳佰陸拾壹 |
| 1261 in Babylonian numerals |   |
| 1261 in Egyptian numerals | 𓆼𓍣𓎋𓏺 |
Roots and squares for 1261
| Is 1261 a square number? | 1261 is not a square number |
| Is 1261 a cube number? | 1261 is not a cube number |
| Square root of 1261 | 35.510561809129 |
| Cube root of 1261 | 10.803679587548 |
Recreational math for 1261
| Number 1261 reversed | 1621 |
| Sum of the digits | 10 |
| Number of digits | 4 |
Arithmetic tables for 1261
Other pages about 1261
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