Compare 1555 vs 1567
| Property | 1555 | 1567 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 51 × 3111 | 15671 |
| Prime factorization | 5 × 311 | 1567 |
| Divisors count | 4 | 2 |
| Divisors | 1, 5, 311, 1555 | 1, 1567 |
| Number of properties | 1 | 7 |
| Additive primes | 134th | |
| Chen primes | 158th | |
| Cousin primes (1st member) | 55th | |
| Isolated primes | 148th | |
| Long primes | 95th | |
| Lucky primes | 59th | |
| Primes | 247th | |
| Semiprimes | 452nd | |
| Roman numberals | MDLV | MDLXVII |
| Base 2 | 110000100112 | 110000111112 |
| Base 3 | 20101213 | 20110013 |
| Base 4 | 1201034 | 1201334 |
| Base 5 | 222105 | 222325 |
| Base 6 | 111116 | 111316 |
| Base 7 | 43517 | 43667 |
| Base 8 | 30238 | 30378 |
| Base 9 | 21179 | 21319 |
| Base 10 | 155510 | 156710 |
| Base 11 | 119411 | 11a511 |
| Base 12 | a9712 | aa712 |
| Base 13 | 92813 | 93713 |
| Base 14 | 7d114 | 7dd14 |
| Base 15 | 6da15 | 6e715 |
| Base 16 | 61316 | 61f16 |