Compare 1909 vs 1912
| Property | 1909 | 1912 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 2 |
| Total factors | 2 | 4 |
| Prime factorization | 231 × 831 | 23 × 2391 |
| Prime factorization | 23 × 83 | 2 × 2 × 2 × 239 |
| Divisors count | 4 | 8 |
| Divisors | 1, 23, 83, 1909 | 1, 2, 4, 8, 239, 478, 956, 1912 |
| Number of properties | 1 | 0 |
| Semiprimes | 549th | |
| Roman numberals | MCMIX | MCMXII |
| Base 2 | 111011101012 | 111011110002 |
| Base 3 | 21212013 | 21212113 |
| Base 4 | 1313114 | 1313204 |
| Base 5 | 301145 | 301225 |
| Base 6 | 125016 | 125046 |
| Base 7 | 53657 | 54017 |
| Base 8 | 35658 | 35708 |
| Base 9 | 25519 | 25549 |
| Base 10 | 190910 | 191210 |
| Base 11 | 148611 | 148911 |
| Base 12 | 113112 | 113412 |
| Base 13 | b3b13 | b4113 |
| Base 14 | 9a514 | 9a814 |
| Base 15 | 87415 | 87715 |
| Base 16 | 77516 | 77816 |