Compare 2556 vs 2561
| Property | 2556 | 2561 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 5 | 2 |
| Prime factorization | 22 × 32 × 711 | 131 × 1971 |
| Prime factorization | 2 × 2 × 3 × 3 × 71 | 13 × 197 |
| Divisors count | 18 | 4 |
| Divisors | 1, 2, 3, 4, 6, 9, 12, 18, 36, 71, 142, 213, 284, 426, 639, 852, 1278, 2556 | 1, 13, 197, 2561 |
| Number of properties | 0 | 1 |
| Semiprimes | 724th | |
| Roman numberals | MMDLVI | MMDLXI |
| Base 2 | 1001111111002 | 1010000000012 |
| Base 3 | 101112003 | 101112123 |
| Base 4 | 2133304 | 2200014 |
| Base 5 | 402115 | 402215 |
| Base 6 | 155006 | 155056 |
| Base 7 | 103117 | 103167 |
| Base 8 | 47748 | 50018 |
| Base 9 | 34509 | 34559 |
| Base 10 | 255610 | 256110 |
| Base 11 | 1a1411 | 1a1911 |
| Base 12 | 159012 | 159512 |
| Base 13 | 121813 | 122013 |
| Base 14 | d0814 | d0d14 |
| Base 15 | b5615 | b5b15 |
| Base 16 | 9fc16 | a0116 |