Compare 21845 vs 21851
| Property | 21845 | 21851 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 51 × 171 × 2571 | 218511 |
| Prime factorization | 5 × 17 × 257 | 21851 |
| Divisors count | 8 | 2 |
| Divisors | 1, 5, 17, 85, 257, 1285, 4369, 21845 | 1, 21851 |
| Number of properties | 0 | 4 |
| Additive primes | 1134th | |
| Isolated primes | 1708th | |
| Long primes | 927th | |
| Primes | 2451st | |
| Roman numberals | ||
| Base 2 | 1010101010101012 | 1010101010110112 |
| Base 3 | 10022220023 | 10022220223 |
| Base 4 | 111111114 | 111111234 |
| Base 5 | 11443405 | 11444015 |
| Base 6 | 2450456 | 2450556 |
| Base 7 | 1204557 | 1204647 |
| Base 8 | 525258 | 525338 |
| Base 9 | 328629 | 328689 |
| Base 10 | 2184510 | 2185110 |
| Base 11 | 1545a11 | 1546511 |
| Base 12 | 1078512 | 1078b12 |
| Base 13 | 9c3513 | 9c3b13 |
| Base 14 | 7d6514 | 7d6b14 |
| Base 15 | 671515 | 671b15 |
| Base 16 | 555516 | 555b16 |