Compare 1909 vs 1939
| Property | 1909 | 1939 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 231 × 831 | 71 × 2771 |
| Prime factorization | 23 × 83 | 7 × 277 |
| Divisors count | 4 | 4 |
| Divisors | 1, 23, 83, 1909 | 1, 7, 277, 1939 |
| Number of properties | 1 | 1 |
| Semiprimes | 549th | 558th |
| Roman numberals | MCMIX | MCMXXXIX |
| Base 2 | 111011101012 | 111100100112 |
| Base 3 | 21212013 | 21222113 |
| Base 4 | 1313114 | 1321034 |
| Base 5 | 301145 | 302245 |
| Base 6 | 125016 | 125516 |
| Base 7 | 53657 | 54407 |
| Base 8 | 35658 | 36238 |
| Base 9 | 25519 | 25849 |
| Base 10 | 190910 | 193910 |
| Base 11 | 148611 | 150311 |
| Base 12 | 113112 | 115712 |
| Base 13 | b3b13 | b6213 |
| Base 14 | 9a514 | 9c714 |
| Base 15 | 87415 | 89415 |
| Base 16 | 77516 | 79316 |