Compare 21281 vs 21285
| Property | 21281 | 21285 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 4 |
| Total factors | 2 | 5 |
| Prime factorization | 131 × 16371 | 32 × 51 × 111 × 431 |
| Prime factorization | 13 × 1637 | 3 × 3 × 5 × 11 × 43 |
| Divisors count | 4 | 24 |
| Divisors | 1, 13, 1637, 21281 | 1, 3, 5, 9, 11, 15, 33, 43, 45, 55, 99, 129, 165, 215, 387, 473, 495, 645, 1419, 1935, 2365, 4257, 7095, 21285 |
| Number of properties | 1 | 0 |
| Semiprimes | 5393rd | |
| Roman numberals | ||
| Base 2 | 1010011001000012 | 1010011001001012 |
| Base 3 | 10020120123 | 10020121003 |
| Base 4 | 110302014 | 110302114 |
| Base 5 | 11401115 | 11401205 |
| Base 6 | 2423056 | 2423136 |
| Base 7 | 1160217 | 1160257 |
| Base 8 | 514418 | 514458 |
| Base 9 | 321659 | 321709 |
| Base 10 | 2128110 | 2128510 |
| Base 11 | 14a9711 | 14aa011 |
| Base 12 | 1039512 | 1039912 |
| Base 13 | 98c013 | 98c413 |
| Base 14 | 7a8114 | 7a8514 |
| Base 15 | 648b15 | 649015 |
| Base 16 | 532116 | 532516 |