Compare 1555 vs 1559
| Property | 1555 | 1559 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 51 × 3111 | 15591 |
| Prime factorization | 5 × 311 | 1559 |
| Divisors count | 4 | 2 |
| Divisors | 1, 5, 311, 1555 | 1, 1559 |
| Number of properties | 1 | 6 |
| Chen primes | 157th | |
| Emirps | 75th | |
| Isolated primes | 147th | |
| Primes | 246th | |
| Semiprimes | 452nd | |
| Sexy primes (2nd member) | 107th | |
| Sophie germain primes | 52nd | |
| Roman numberals | MDLV | MDLIX |
| Base 2 | 110000100112 | 110000101112 |
| Base 3 | 20101213 | 20102023 |
| Base 4 | 1201034 | 1201134 |
| Base 5 | 222105 | 222145 |
| Base 6 | 111116 | 111156 |
| Base 7 | 43517 | 43557 |
| Base 8 | 30238 | 30278 |
| Base 9 | 21179 | 21229 |
| Base 10 | 155510 | 155910 |
| Base 11 | 119411 | 119811 |
| Base 12 | a9712 | a9b12 |
| Base 13 | 92813 | 92c13 |
| Base 14 | 7d114 | 7d514 |
| Base 15 | 6da15 | 6de15 |
| Base 16 | 61316 | 61716 |