Compare 166 vs 187
| Property | 166 | 187 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 21 × 831 | 111 × 171 |
| Prime factorization | 2 × 83 | 11 × 17 |
| Divisors count | 4 | 4 |
| Divisors | 1, 2, 83, 166 | 1, 11, 17, 187 |
| Number of properties | 1 | 1 |
| Semiprimes | 55th | 61st |
| Roman numberals | CLXVI | CLXXXVII |
| Base 2 | 101001102 | 101110112 |
| Base 3 | 200113 | 202213 |
| Base 4 | 22124 | 23234 |
| Base 5 | 11315 | 12225 |
| Base 6 | 4346 | 5116 |
| Base 7 | 3257 | 3557 |
| Base 8 | 2468 | 2738 |
| Base 9 | 2049 | 2279 |
| Base 10 | 16610 | 18710 |
| Base 11 | 14111 | 16011 |
| Base 12 | 11a12 | 13712 |
| Base 13 | ca13 | 11513 |
| Base 14 | bc14 | d514 |
| Base 15 | b115 | c715 |
| Base 16 | a616 | bb16 |