Compare 21391 vs 21396
| Property | 21391 | 21396 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 4 |
| Prime factorization | 213911 | 22 × 31 × 17831 |
| Prime factorization | 21391 | 2 × 2 × 3 × 1783 |
| Divisors count | 2 | 12 |
| Divisors | 1, 21391 | 1, 2, 3, 4, 6, 12, 1783, 3566, 5349, 7132, 10698, 21396 |
| Number of properties | 3 | 0 |
| Isolated primes | 1676th | |
| Primes | 2401st | |
| Sexy primes (1st member) | 729th | |
| Roman numberals | ||
| Base 2 | 1010011100011112 | 1010011100101002 |
| Base 3 | 10021000213 | 10021001103 |
| Base 4 | 110320334 | 110321104 |
| Base 5 | 11410315 | 11410415 |
| Base 6 | 2430116 | 2430206 |
| Base 7 | 1162367 | 1162447 |
| Base 8 | 516178 | 516248 |
| Base 9 | 323079 | 323139 |
| Base 10 | 2139110 | 2139610 |
| Base 11 | 1508711 | 1509111 |
| Base 12 | 1046712 | 1047012 |
| Base 13 | 997613 | 997b13 |
| Base 14 | 7b1d14 | 7b2414 |
| Base 15 | 651115 | 651615 |
| Base 16 | 538f16 | 539416 |