Compare 21945 vs 21947
| Property | 21945 | 21947 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 5 | 2 |
| Total factors | 5 | 2 |
| Prime factorization | 31 × 51 × 71 × 111 × 191 | 171 × 12911 |
| Prime factorization | 3 × 5 × 7 × 11 × 19 | 17 × 1291 |
| Divisors count | 32 | 4 |
| Divisors | 1, 3, 5, 7, 11, 15, 19, 21, 33, 35, 55, 57, 77, 95, 105, 133, 165, 209, 231, 285, 385, 399, 627, 665, 1045, 1155, 1463, 1995, 3135, 4389, 7315, 21945 | 1, 17, 1291, 21947 |
| Number of properties | 0 | 1 |
| Semiprimes | 5539th | |
| Roman numberals | ||
| Base 2 | 1010101101110012 | 1010101101110112 |
| Base 3 | 10100022103 | 10100022123 |
| Base 4 | 111123214 | 111123234 |
| Base 5 | 12002405 | 12002425 |
| Base 6 | 2453336 | 2453356 |
| Base 7 | 1206607 | 1206627 |
| Base 8 | 526718 | 526738 |
| Base 9 | 330839 | 330859 |
| Base 10 | 2194510 | 2194710 |
| Base 11 | 1554011 | 1554211 |
| Base 12 | 1084912 | 1084b12 |
| Base 13 | 9cb113 | 9cb313 |
| Base 14 | 7dd714 | 7dd914 |
| Base 15 | 678015 | 678215 |
| Base 16 | 55b916 | 55bb16 |