Compare 21397 vs 21408
| Property | 21397 | 21408 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 7 |
| Prime factorization | 213971 | 25 × 31 × 2231 |
| Prime factorization | 21397 | 2 × 2 × 2 × 2 × 2 × 3 × 223 |
| Divisors count | 2 | 24 |
| Divisors | 1, 21397 | 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 96, 223, 446, 669, 892, 1338, 1784, 2676, 3568, 5352, 7136, 10704, 21408 |
| Number of properties | 5 | 0 |
| Cousin primes (1st member) | 365th | |
| Isolated primes | 1677th | |
| Primes | 2402nd | |
| Pythagorean primes | 1191st | |
| Sexy primes (2nd member) | 729th | |
| Roman numberals | ||
| Base 2 | 1010011100101012 | 1010011101000002 |
| Base 3 | 10021001113 | 10021002203 |
| Base 4 | 110321114 | 110322004 |
| Base 5 | 11410425 | 11411135 |
| Base 6 | 2430216 | 2430406 |
| Base 7 | 1162457 | 1162627 |
| Base 8 | 516258 | 516408 |
| Base 9 | 323149 | 323269 |
| Base 10 | 2139710 | 2140810 |
| Base 11 | 1509211 | 150a211 |
| Base 12 | 1047112 | 1048012 |
| Base 13 | 997c13 | 998a13 |
| Base 14 | 7b2514 | 7b3214 |
| Base 15 | 651715 | 652315 |
| Base 16 | 539516 | 53a016 |