Compare 21893 vs 21905
| Property | 21893 | 21905 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 218931 | 51 × 131 × 3371 |
| Prime factorization | 21893 | 5 × 13 × 337 |
| Divisors count | 2 | 8 |
| Divisors | 1, 21893 | 1, 5, 13, 65, 337, 1685, 4381, 21905 |
| Number of properties | 5 | 0 |
| Additive primes | 1136th | |
| Isolated primes | 1713th | |
| Primes | 2456th | |
| Pythagorean primes | 1218th | |
| Sophie germain primes | 354th | |
| Roman numberals | ||
| Base 2 | 1010101100001012 | 1010101100100012 |
| Base 3 | 10100002123 | 10100010223 |
| Base 4 | 111120114 | 111121014 |
| Base 5 | 12000335 | 12001105 |
| Base 6 | 2452056 | 2452256 |
| Base 7 | 1205547 | 1206027 |
| Base 8 | 526058 | 526218 |
| Base 9 | 330259 | 330389 |
| Base 10 | 2189310 | 2190510 |
| Base 11 | 154a311 | 1550411 |
| Base 12 | 1080512 | 1081512 |
| Base 13 | 9c7113 | 9c8013 |
| Base 14 | 7d9b14 | 7da914 |
| Base 15 | 674815 | 675515 |
| Base 16 | 558516 | 559116 |