Compare 21391 vs 21395
| Property | 21391 | 21395 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 213911 | 51 × 111 × 3891 |
| Prime factorization | 21391 | 5 × 11 × 389 |
| Divisors count | 2 | 8 |
| Divisors | 1, 21391 | 1, 5, 11, 55, 389, 1945, 4279, 21395 |
| Number of properties | 3 | 0 |
| Isolated primes | 1676th | |
| Primes | 2401st | |
| Sexy primes (1st member) | 729th | |
| Roman numberals | ||
| Base 2 | 1010011100011112 | 1010011100100112 |
| Base 3 | 10021000213 | 10021001023 |
| Base 4 | 110320334 | 110321034 |
| Base 5 | 11410315 | 11410405 |
| Base 6 | 2430116 | 2430156 |
| Base 7 | 1162367 | 1162437 |
| Base 8 | 516178 | 516238 |
| Base 9 | 323079 | 323129 |
| Base 10 | 2139110 | 2139510 |
| Base 11 | 1508711 | 1509011 |
| Base 12 | 1046712 | 1046b12 |
| Base 13 | 997613 | 997a13 |
| Base 14 | 7b1d14 | 7b2314 |
| Base 15 | 651115 | 651515 |
| Base 16 | 538f16 | 539316 |