Compare 166 vs 205
| Property | 166 | 205 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 21 × 831 | 51 × 411 |
| Prime factorization | 2 × 83 | 5 × 41 |
| Divisors count | 4 | 4 |
| Divisors | 1, 2, 83, 166 | 1, 5, 41, 205 |
| Number of properties | 1 | 1 |
| Semiprimes | 55th | 66th |
| Roman numberals | CLXVI | CCV |
| Base 2 | 101001102 | 110011012 |
| Base 3 | 200113 | 211213 |
| Base 4 | 22124 | 30314 |
| Base 5 | 11315 | 13105 |
| Base 6 | 4346 | 5416 |
| Base 7 | 3257 | 4127 |
| Base 8 | 2468 | 3158 |
| Base 9 | 2049 | 2479 |
| Base 10 | 16610 | 20510 |
| Base 11 | 14111 | 17711 |
| Base 12 | 11a12 | 15112 |
| Base 13 | ca13 | 12a13 |
| Base 14 | bc14 | 10914 |
| Base 15 | b115 | da15 |
| Base 16 | a616 | cd16 |