Compare 2561 vs 2581
| Property | 2561 | 2581 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 131 × 1971 | 291 × 891 |
| Prime factorization | 13 × 197 | 29 × 89 |
| Divisors count | 4 | 4 |
| Divisors | 1, 13, 197, 2561 | 1, 29, 89, 2581 |
| Number of properties | 1 | 1 |
| Semiprimes | 724th | 733rd |
| Roman numberals | MMDLXI | MMDLXXXI |
| Base 2 | 1010000000012 | 1010000101012 |
| Base 3 | 101112123 | 101121213 |
| Base 4 | 2200014 | 2201114 |
| Base 5 | 402215 | 403115 |
| Base 6 | 155056 | 155416 |
| Base 7 | 103167 | 103457 |
| Base 8 | 50018 | 50258 |
| Base 9 | 34559 | 34779 |
| Base 10 | 256110 | 258110 |
| Base 11 | 1a1911 | 1a3711 |
| Base 12 | 159512 | 15b112 |
| Base 13 | 122013 | 123713 |
| Base 14 | d0d14 | d2514 |
| Base 15 | b5b15 | b7115 |
| Base 16 | a0116 | a1516 |