Compare 21851 vs 21858
| Property | 21851 | 21858 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 218511 | 21 × 31 × 36431 |
| Prime factorization | 21851 | 2 × 3 × 3643 |
| Divisors count | 2 | 8 |
| Divisors | 1, 21851 | 1, 2, 3, 6, 3643, 7286, 10929, 21858 |
| Number of properties | 4 | 0 |
| Additive primes | 1134th | |
| Isolated primes | 1708th | |
| Long primes | 927th | |
| Primes | 2451st | |
| Roman numberals | ||
| Base 2 | 1010101010110112 | 1010101011000102 |
| Base 3 | 10022220223 | 10022221203 |
| Base 4 | 111111234 | 111112024 |
| Base 5 | 11444015 | 11444135 |
| Base 6 | 2450556 | 2451106 |
| Base 7 | 1204647 | 1205047 |
| Base 8 | 525338 | 525428 |
| Base 9 | 328689 | 328769 |
| Base 10 | 2185110 | 2185810 |
| Base 11 | 1546511 | 1547111 |
| Base 12 | 1078b12 | 1079612 |
| Base 13 | 9c3b13 | 9c4513 |
| Base 14 | 7d6b14 | 7d7414 |
| Base 15 | 671b15 | 672315 |
| Base 16 | 555b16 | 556216 |