Compare 561 vs 565
| Property | 561 | 565 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 3 | 2 |
| Prime factorization | 31 × 111 × 171 | 51 × 1131 |
| Prime factorization | 3 × 11 × 17 | 5 × 113 |
| Divisors count | 8 | 4 |
| Divisors | 1, 3, 11, 17, 33, 51, 187, 561 | 1, 5, 113, 565 |
| Number of properties | 0 | 1 |
| Semiprimes | 177th | |
| Roman numberals | DLXI | DLXV |
| Base 2 | 10001100012 | 10001101012 |
| Base 3 | 2022103 | 2022213 |
| Base 4 | 203014 | 203114 |
| Base 5 | 42215 | 42305 |
| Base 6 | 23336 | 23416 |
| Base 7 | 14317 | 14357 |
| Base 8 | 10618 | 10658 |
| Base 9 | 6839 | 6879 |
| Base 10 | 56110 | 56510 |
| Base 11 | 47011 | 47411 |
| Base 12 | 3a912 | 3b112 |
| Base 13 | 34213 | 34613 |
| Base 14 | 2c114 | 2c514 |
| Base 15 | 27615 | 27a15 |
| Base 16 | 23116 | 23516 |