Compare 634 vs 640
| Property | 634 | 640 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 2 |
| Total factors | 2 | 8 |
| Prime factorization | 21 × 3171 | 27 × 51 |
| Prime factorization | 2 × 317 | 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 |
| Divisors count | 4 | 16 |
| Divisors | 1, 2, 317, 634 | 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640 |
| Number of properties | 1 | 0 |
| Semiprimes | 194th | |
| Roman numberals | DCXXXIV | DCXL |
| Base 2 | 10011110102 | 10100000002 |
| Base 3 | 2121113 | 2122013 |
| Base 4 | 213224 | 220004 |
| Base 5 | 100145 | 100305 |
| Base 6 | 25346 | 25446 |
| Base 7 | 15647 | 16037 |
| Base 8 | 11728 | 12008 |
| Base 9 | 7749 | 7819 |
| Base 10 | 63410 | 64010 |
| Base 11 | 52711 | 53211 |
| Base 12 | 44a12 | 45412 |
| Base 13 | 39a13 | 3a313 |
| Base 14 | 33414 | 33a14 |
| Base 15 | 2c415 | 2ca15 |
| Base 16 | 27a16 | 28016 |