Compare 1945 vs 1961
| Property | 1945 | 1961 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 51 × 3891 | 371 × 531 |
| Prime factorization | 5 × 389 | 37 × 53 |
| Divisors count | 4 | 4 |
| Divisors | 1, 5, 389, 1945 | 1, 37, 53, 1961 |
| Number of properties | 1 | 1 |
| Semiprimes | 562nd | 566th |
| Roman numberals | MCMXLV | MCMLXI |
| Base 2 | 111100110012 | 111101010012 |
| Base 3 | 22000013 | 22001223 |
| Base 4 | 1321214 | 1322214 |
| Base 5 | 302405 | 303215 |
| Base 6 | 130016 | 130256 |
| Base 7 | 54467 | 55017 |
| Base 8 | 36318 | 36518 |
| Base 9 | 26019 | 26189 |
| Base 10 | 194510 | 196110 |
| Base 11 | 150911 | 152311 |
| Base 12 | 116112 | 117512 |
| Base 13 | b6813 | b7b13 |
| Base 14 | 9cd14 | a0114 |
| Base 15 | 89a15 | 8ab15 |
| Base 16 | 79916 | 7a916 |