Compare 1959 vs 1961
| Property | 1959 | 1961 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 31 × 6531 | 371 × 531 |
| Prime factorization | 3 × 653 | 37 × 53 |
| Divisors count | 4 | 4 |
| Divisors | 1, 3, 653, 1959 | 1, 37, 53, 1961 |
| Number of properties | 1 | 1 |
| Semiprimes | 565th | 566th |
| Roman numberals | MCMLIX | MCMLXI |
| Base 2 | 111101001112 | 111101010012 |
| Base 3 | 22001203 | 22001223 |
| Base 4 | 1322134 | 1322214 |
| Base 5 | 303145 | 303215 |
| Base 6 | 130236 | 130256 |
| Base 7 | 54667 | 55017 |
| Base 8 | 36478 | 36518 |
| Base 9 | 26169 | 26189 |
| Base 10 | 195910 | 196110 |
| Base 11 | 152111 | 152311 |
| Base 12 | 117312 | 117512 |
| Base 13 | b7913 | b7b13 |
| Base 14 | 9dd14 | a0114 |
| Base 15 | 8a915 | 8ab15 |
| Base 16 | 7a716 | 7a916 |