Compare 21391 vs 21402
| Property | 21391 | 21402 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 4 |
| Total factors | 1 | 5 |
| Prime factorization | 213911 | 21 × 32 × 291 × 411 |
| Prime factorization | 21391 | 2 × 3 × 3 × 29 × 41 |
| Divisors count | 2 | 24 |
| Divisors | 1, 21391 | 1, 2, 3, 6, 9, 18, 29, 41, 58, 82, 87, 123, 174, 246, 261, 369, 522, 738, 1189, 2378, 3567, 7134, 10701, 21402 |
| Number of properties | 3 | 0 |
| Isolated primes | 1676th | |
| Primes | 2401st | |
| Sexy primes (1st member) | 729th | |
| Roman numberals | ||
| Base 2 | 1010011100011112 | 1010011100110102 |
| Base 3 | 10021000213 | 10021002003 |
| Base 4 | 110320334 | 110321224 |
| Base 5 | 11410315 | 11411025 |
| Base 6 | 2430116 | 2430306 |
| Base 7 | 1162367 | 1162537 |
| Base 8 | 516178 | 516328 |
| Base 9 | 323079 | 323209 |
| Base 10 | 2139110 | 2140210 |
| Base 11 | 1508711 | 1509711 |
| Base 12 | 1046712 | 1047612 |
| Base 13 | 997613 | 998413 |
| Base 14 | 7b1d14 | 7b2a14 |
| Base 15 | 651115 | 651c15 |
| Base 16 | 538f16 | 539a16 |