Compare 45 vs 57
| Property | 45 | 57 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 3 | 2 |
| Prime factorization | 32 × 51 | 31 × 191 |
| Prime factorization | 3 × 3 × 5 | 3 × 19 |
| Divisors count | 6 | 4 |
| Divisors | 1, 3, 5, 9, 15, 45 | 1, 3, 19, 57 |
| Number of properties | 0 | 1 |
| Semiprimes | 20th | |
| Roman numberals | XLV | LVII |
| Base 2 | 1011012 | 1110012 |
| Base 3 | 12003 | 20103 |
| Base 4 | 2314 | 3214 |
| Base 5 | 1405 | 2125 |
| Base 6 | 1136 | 1336 |
| Base 7 | 637 | 1117 |
| Base 8 | 558 | 718 |
| Base 9 | 509 | 639 |
| Base 10 | 4510 | 5710 |
| Base 11 | 4111 | 5211 |
| Base 12 | 3912 | 4912 |
| Base 13 | 3613 | 4513 |
| Base 14 | 3314 | 4114 |
| Base 15 | 3015 | 3c15 |
| Base 16 | 2d16 | 3916 |