Compare 21285 vs 21287
| Property | 21285 | 21287 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 4 | 2 |
| Total factors | 5 | 2 |
| Prime factorization | 32 × 51 × 111 × 431 | 71 × 30411 |
| Prime factorization | 3 × 3 × 5 × 11 × 43 | 7 × 3041 |
| Divisors count | 24 | 4 |
| Divisors | 1, 3, 5, 9, 11, 15, 33, 43, 45, 55, 99, 129, 165, 215, 387, 473, 495, 645, 1419, 1935, 2365, 4257, 7095, 21285 | 1, 7, 3041, 21287 |
| Number of properties | 0 | 1 |
| Semiprimes | 5394th | |
| Roman numberals | ||
| Base 2 | 1010011001001012 | 1010011001001112 |
| Base 3 | 10020121003 | 10020121023 |
| Base 4 | 110302114 | 110302134 |
| Base 5 | 11401205 | 11401225 |
| Base 6 | 2423136 | 2423156 |
| Base 7 | 1160257 | 1160307 |
| Base 8 | 514458 | 514478 |
| Base 9 | 321709 | 321729 |
| Base 10 | 2128510 | 2128710 |
| Base 11 | 14aa011 | 14aa211 |
| Base 12 | 1039912 | 1039b12 |
| Base 13 | 98c413 | 98c613 |
| Base 14 | 7a8514 | 7a8714 |
| Base 15 | 649015 | 649215 |
| Base 16 | 532516 | 532716 |