Compare 634 vs 645
| Property | 634 | 645 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 3 |
| Total factors | 2 | 3 |
| Prime factorization | 21 × 3171 | 31 × 51 × 431 |
| Prime factorization | 2 × 317 | 3 × 5 × 43 |
| Divisors count | 4 | 8 |
| Divisors | 1, 2, 317, 634 | 1, 3, 5, 15, 43, 129, 215, 645 |
| Number of properties | 1 | 0 |
| Semiprimes | 194th | |
| Roman numberals | DCXXXIV | DCXLV |
| Base 2 | 10011110102 | 10100001012 |
| Base 3 | 2121113 | 2122203 |
| Base 4 | 213224 | 220114 |
| Base 5 | 100145 | 100405 |
| Base 6 | 25346 | 25536 |
| Base 7 | 15647 | 16117 |
| Base 8 | 11728 | 12058 |
| Base 9 | 7749 | 7869 |
| Base 10 | 63410 | 64510 |
| Base 11 | 52711 | 53711 |
| Base 12 | 44a12 | 45912 |
| Base 13 | 39a13 | 3a813 |
| Base 14 | 33414 | 34114 |
| Base 15 | 2c415 | 2d015 |
| Base 16 | 27a16 | 28516 |