Compare 1919 vs 1945
| Property | 1919 | 1945 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 191 × 1011 | 51 × 3891 |
| Prime factorization | 19 × 101 | 5 × 389 |
| Divisors count | 4 | 4 |
| Divisors | 1, 19, 101, 1919 | 1, 5, 389, 1945 |
| Number of properties | 1 | 1 |
| Semiprimes | 551st | 562nd |
| Roman numberals | MCMXIX | MCMXLV |
| Base 2 | 111011111112 | 111100110012 |
| Base 3 | 21220023 | 22000013 |
| Base 4 | 1313334 | 1321214 |
| Base 5 | 301345 | 302405 |
| Base 6 | 125156 | 130016 |
| Base 7 | 54117 | 54467 |
| Base 8 | 35778 | 36318 |
| Base 9 | 25629 | 26019 |
| Base 10 | 191910 | 194510 |
| Base 11 | 149511 | 150911 |
| Base 12 | 113b12 | 116112 |
| Base 13 | b4813 | b6813 |
| Base 14 | 9b114 | 9cd14 |
| Base 15 | 87e15 | 89a15 |
| Base 16 | 77f16 | 79916 |