Compare 1961 vs 2005
| Property | 1961 | 2005 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 371 × 531 | 51 × 4011 |
| Prime factorization | 37 × 53 | 5 × 401 |
| Divisors count | 4 | 4 |
| Divisors | 1, 37, 53, 1961 | 1, 5, 401, 2005 |
| Number of properties | 1 | 1 |
| Semiprimes | 566th | 578th |
| Roman numberals | MCMLXI | MMV |
| Base 2 | 111101010012 | 111110101012 |
| Base 3 | 22001223 | 22020213 |
| Base 4 | 1322214 | 1331114 |
| Base 5 | 303215 | 310105 |
| Base 6 | 130256 | 131416 |
| Base 7 | 55017 | 55637 |
| Base 8 | 36518 | 37258 |
| Base 9 | 26189 | 26679 |
| Base 10 | 196110 | 200510 |
| Base 11 | 152311 | 156311 |
| Base 12 | 117512 | 11b112 |
| Base 13 | b7b13 | bb313 |
| Base 14 | a0114 | a3314 |
| Base 15 | 8ab15 | 8da15 |
| Base 16 | 7a916 | 7d516 |