Compare 561 vs 566
| Property | 561 | 566 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 3 | 2 |
| Prime factorization | 31 × 111 × 171 | 21 × 2831 |
| Prime factorization | 3 × 11 × 17 | 2 × 283 |
| Divisors count | 8 | 4 |
| Divisors | 1, 3, 11, 17, 33, 51, 187, 561 | 1, 2, 283, 566 |
| Number of properties | 0 | 1 |
| Semiprimes | 178th | |
| Roman numberals | DLXI | DLXVI |
| Base 2 | 10001100012 | 10001101102 |
| Base 3 | 2022103 | 2022223 |
| Base 4 | 203014 | 203124 |
| Base 5 | 42215 | 42315 |
| Base 6 | 23336 | 23426 |
| Base 7 | 14317 | 14367 |
| Base 8 | 10618 | 10668 |
| Base 9 | 6839 | 6889 |
| Base 10 | 56110 | 56610 |
| Base 11 | 47011 | 47511 |
| Base 12 | 3a912 | 3b212 |
| Base 13 | 34213 | 34713 |
| Base 14 | 2c114 | 2c614 |
| Base 15 | 27615 | 27b15 |
| Base 16 | 23116 | 23616 |