Compare 51 vs 56
| Property | 51 | 56 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 2 |
| Total factors | 2 | 4 |
| Prime factorization | 31 × 171 | 23 × 71 |
| Prime factorization | 3 × 17 | 2 × 2 × 2 × 7 |
| Divisors count | 4 | 8 |
| Divisors | 1, 3, 17, 51 | 1, 2, 4, 7, 8, 14, 28, 56 |
| Number of properties | 1 | 0 |
| Semiprimes | 18th | |
| Roman numberals | LI | LVI |
| Base 2 | 1100112 | 1110002 |
| Base 3 | 12203 | 20023 |
| Base 4 | 3034 | 3204 |
| Base 5 | 2015 | 2115 |
| Base 6 | 1236 | 1326 |
| Base 7 | 1027 | 1107 |
| Base 8 | 638 | 708 |
| Base 9 | 569 | 629 |
| Base 10 | 5110 | 5610 |
| Base 11 | 4711 | 5111 |
| Base 12 | 4312 | 4812 |
| Base 13 | 3c13 | 4413 |
| Base 14 | 3914 | 4014 |
| Base 15 | 3615 | 3b15 |
| Base 16 | 3316 | 3816 |