Compare 21395 vs 21397
| Property | 21395 | 21397 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 51 × 111 × 3891 | 213971 |
| Prime factorization | 5 × 11 × 389 | 21397 |
| Divisors count | 8 | 2 |
| Divisors | 1, 5, 11, 55, 389, 1945, 4279, 21395 | 1, 21397 |
| Number of properties | 0 | 5 |
| Cousin primes (1st member) | 365th | |
| Isolated primes | 1677th | |
| Primes | 2402nd | |
| Pythagorean primes | 1191st | |
| Sexy primes (2nd member) | 729th | |
| Roman numberals | ||
| Base 2 | 1010011100100112 | 1010011100101012 |
| Base 3 | 10021001023 | 10021001113 |
| Base 4 | 110321034 | 110321114 |
| Base 5 | 11410405 | 11410425 |
| Base 6 | 2430156 | 2430216 |
| Base 7 | 1162437 | 1162457 |
| Base 8 | 516238 | 516258 |
| Base 9 | 323129 | 323149 |
| Base 10 | 2139510 | 2139710 |
| Base 11 | 1509011 | 1509211 |
| Base 12 | 1046b12 | 1047112 |
| Base 13 | 997a13 | 997c13 |
| Base 14 | 7b2314 | 7b2514 |
| Base 15 | 651515 | 651715 |
| Base 16 | 539316 | 539516 |