Compare 2557 vs 2566
| Property | 2557 | 2566 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 25571 | 21 × 12831 |
| Prime factorization | 2557 | 2 × 1283 |
| Divisors count | 2 | 4 |
| Divisors | 1, 2557 | 1, 2, 1283, 2566 |
| Number of properties | 8 | 1 |
| Additive primes | 196th | |
| Chen primes | 226th | |
| Happy primes | 66th | |
| Isolated primes | 230th | |
| Lucky primes | 81st | |
| Primes | 375th | |
| Pythagorean primes | 183rd | |
| Semiprimes | 726th | |
| Sexy primes (2nd member) | 153rd | |
| Roman numberals | MMDLVII | MMDLXVI |
| Base 2 | 1001111111012 | 1010000001102 |
| Base 3 | 101112013 | 101120013 |
| Base 4 | 2133314 | 2200124 |
| Base 5 | 402125 | 402315 |
| Base 6 | 155016 | 155146 |
| Base 7 | 103127 | 103247 |
| Base 8 | 47758 | 50068 |
| Base 9 | 34519 | 34619 |
| Base 10 | 255710 | 256610 |
| Base 11 | 1a1511 | 1a2311 |
| Base 12 | 159112 | 159a12 |
| Base 13 | 121913 | 122513 |
| Base 14 | d0914 | d1414 |
| Base 15 | b5715 | b6115 |
| Base 16 | 9fd16 | a0616 |