Compare 1955 vs 1961
| Property | 1955 | 1961 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 3 | 2 |
| Prime factorization | 51 × 171 × 231 | 371 × 531 |
| Prime factorization | 5 × 17 × 23 | 37 × 53 |
| Divisors count | 8 | 4 |
| Divisors | 1, 5, 17, 23, 85, 115, 391, 1955 | 1, 37, 53, 1961 |
| Number of properties | 0 | 1 |
| Semiprimes | 566th | |
| Roman numberals | MCMLV | MCMLXI |
| Base 2 | 111101000112 | 111101010012 |
| Base 3 | 22001023 | 22001223 |
| Base 4 | 1322034 | 1322214 |
| Base 5 | 303105 | 303215 |
| Base 6 | 130156 | 130256 |
| Base 7 | 54627 | 55017 |
| Base 8 | 36438 | 36518 |
| Base 9 | 26129 | 26189 |
| Base 10 | 195510 | 196110 |
| Base 11 | 151811 | 152311 |
| Base 12 | 116b12 | 117512 |
| Base 13 | b7513 | b7b13 |
| Base 14 | 9d914 | a0114 |
| Base 15 | 8a515 | 8ab15 |
| Base 16 | 7a316 | 7a916 |