Compare 155 vs 187
| Property | 155 | 187 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 51 × 311 | 111 × 171 |
| Prime factorization | 5 × 31 | 11 × 17 |
| Divisors count | 4 | 4 |
| Divisors | 1, 5, 31, 155 | 1, 11, 17, 187 |
| Number of properties | 1 | 1 |
| Semiprimes | 51st | 61st |
| Roman numberals | CLV | CLXXXVII |
| Base 2 | 100110112 | 101110112 |
| Base 3 | 122023 | 202213 |
| Base 4 | 21234 | 23234 |
| Base 5 | 11105 | 12225 |
| Base 6 | 4156 | 5116 |
| Base 7 | 3117 | 3557 |
| Base 8 | 2338 | 2738 |
| Base 9 | 1829 | 2279 |
| Base 10 | 15510 | 18710 |
| Base 11 | 13111 | 16011 |
| Base 12 | 10b12 | 13712 |
| Base 13 | bc13 | 11513 |
| Base 14 | b114 | d514 |
| Base 15 | a515 | c715 |
| Base 16 | 9b16 | bb16 |