Compare 255 vs 257
Property | 255 | 257 |
---|---|---|
Type | composite number | prime |
Unique factors | 3 | 1 |
Total factors | 3 | 1 |
Prime factorization | 31 × 51 × 171 | 2571 |
Prime factorization | 3 × 5 × 17 | 257 |
Divisors count | 8 | 2 |
Divisors | 1, 3, 5, 15, 17, 51, 85, 255 | 1, 257 |
Number of properties | 0 | 16 |
Chen primes | 42nd | |
Fermat primes | 4th | |
Good primes | 20th | |
Isolated primes | 22nd | |
Long primes | 21st | |
Pierpont primes | 14th | |
Primes | 55th | |
Proth primes | 10th | |
Pythagorean primes | 25th | |
Quartan primes | 4th | |
Sexy primes (1st member) | 31st | |
Sexy primes (2nd member) | 30th | |
Sexy prime quadrupletss (2nd member) | 5th | |
Sexy prime triplets (1st member) | 16th | |
Sexy prime triplets (2nd member) | 15th | |
Solinas primes | 31st | |
Roman numberals | CCLV | CCLVII |
Base 2 | 111111112 | 1000000012 |
Base 3 | 1001103 | 1001123 |
Base 4 | 33334 | 100014 |
Base 5 | 20105 | 20125 |
Base 6 | 11036 | 11056 |
Base 7 | 5137 | 5157 |
Base 8 | 3778 | 4018 |
Base 9 | 3139 | 3159 |
Base 10 | 25510 | 25710 |
Base 11 | 21211 | 21411 |
Base 12 | 19312 | 19512 |
Base 13 | 16813 | 16a13 |
Base 14 | 14314 | 14514 |
Base 15 | 12015 | 12215 |
Base 16 | ff16 | 10116 |