Compare 1908 vs 1909
| Property | 1908 | 1909 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 5 | 2 |
| Prime factorization | 22 × 32 × 531 | 231 × 831 |
| Prime factorization | 2 × 2 × 3 × 3 × 53 | 23 × 83 |
| Divisors count | 18 | 4 |
| Divisors | 1, 2, 3, 4, 6, 9, 12, 18, 36, 53, 106, 159, 212, 318, 477, 636, 954, 1908 | 1, 23, 83, 1909 |
| Number of properties | 0 | 1 |
| Semiprimes | 549th | |
| Roman numberals | MCMVIII | MCMIX |
| Base 2 | 111011101002 | 111011101012 |
| Base 3 | 21212003 | 21212013 |
| Base 4 | 1313104 | 1313114 |
| Base 5 | 301135 | 301145 |
| Base 6 | 125006 | 125016 |
| Base 7 | 53647 | 53657 |
| Base 8 | 35648 | 35658 |
| Base 9 | 25509 | 25519 |
| Base 10 | 190810 | 190910 |
| Base 11 | 148511 | 148611 |
| Base 12 | 113012 | 113112 |
| Base 13 | b3a13 | b3b13 |
| Base 14 | 9a414 | 9a514 |
| Base 15 | 87315 | 87415 |
| Base 16 | 77416 | 77516 |