8
Everything about the number 8 — its names, how to write it in other bases and numeral systems, and what makes it interesting mathematically.
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Names of 8
| Nominal | 8 |
| Cardinal | eight |
| Ordinal | 8th |
| This number as US currency | eight dollars |
Properties (and some facts) of 8
| Is 8 an odd number? | 8 is not an odd number |
| Is 8 an even number? | 8 is an even number |
| Is 8 a palindrome? | 8 is a palindrome |
| Is 8 a triangle number? | 8 is not a triangle number |
| Factorial (8!) of the number 8 | 40320 |
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8 in other bases
| Base 2 (Binary) | 1000 |
| Base 3 (Ternary) | 22 |
| Base 4 (Quaternary) | 20 |
| Base 5 (Quinary) | 13 |
| Base 6 (Senary) | 12 |
| Base 8 (Octal) | 10 |
| Base 12 (Duodecimal) | 8 |
| Base 16 (Hexadecimal) | 8 |
| Base 20 (Vigesimal) | 8 |
Primes and factors tests for 8
| Is 8 a prime number? | 8 is not a prime number |
| Is 8 a perfect number? | 8 is not a perfect number |
| Is 8 a Mersenne prime? | 8 is not a Mersenne prime |
| Is 8 a Fermat prime? | 8 is not a Fermat prime |
| Is 8 a Fibonacci prime? | 8 is not a Fibonacci prime |
| Is 8 a partition prime? | 8 is not a partition prime |
| Is 8 a Pell prime? | 8 is not a Pell prime |
| Prime Factors | Prime factors of 8 |
8 in other numeral systems
| 8 in Roman numerals | VIII |
| 8 in Chinese numerals | 捌 |
| 8 in Babylonian numerals |  |
| 8 in Egyptian numerals | 𓐁 |
Roots and squares for 8
| Is 8 a square number? | 8 is not a square number |
| Is 8 a cube number? | 8 is a cube number |
| Square root of 8 | 2.8284271247462 |
| Cube root of 8 | 2 |
Recreational math for 8
| Number 8 reversed | 8 |
| Sum of the digits | 8 |
| Number of digits | 1 |
Arithmetic tables for 8
Other pages about 8
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