Compare 161 vs 187
| Property | 161 | 187 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 71 × 231 | 111 × 171 |
| Prime factorization | 7 × 23 | 11 × 17 |
| Divisors count | 4 | 4 |
| Divisors | 1, 7, 23, 161 | 1, 11, 17, 187 |
| Number of properties | 1 | 1 |
| Semiprimes | 54th | 61st |
| Roman numberals | CLXI | CLXXXVII |
| Base 2 | 101000012 | 101110112 |
| Base 3 | 122223 | 202213 |
| Base 4 | 22014 | 23234 |
| Base 5 | 11215 | 12225 |
| Base 6 | 4256 | 5116 |
| Base 7 | 3207 | 3557 |
| Base 8 | 2418 | 2738 |
| Base 9 | 1889 | 2279 |
| Base 10 | 16110 | 18710 |
| Base 11 | 13711 | 16011 |
| Base 12 | 11512 | 13712 |
| Base 13 | c513 | 11513 |
| Base 14 | b714 | d514 |
| Base 15 | ab15 | c715 |
| Base 16 | a116 | bb16 |