Compare 21391 vs 21394
| Property | 21391 | 21394 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 213911 | 21 × 191 × 5631 |
| Prime factorization | 21391 | 2 × 19 × 563 |
| Divisors count | 2 | 8 |
| Divisors | 1, 21391 | 1, 2, 19, 38, 563, 1126, 10697, 21394 |
| Number of properties | 3 | 0 |
| Isolated primes | 1676th | |
| Primes | 2401st | |
| Sexy primes (1st member) | 729th | |
| Roman numberals | ||
| Base 2 | 1010011100011112 | 1010011100100102 |
| Base 3 | 10021000213 | 10021001013 |
| Base 4 | 110320334 | 110321024 |
| Base 5 | 11410315 | 11410345 |
| Base 6 | 2430116 | 2430146 |
| Base 7 | 1162367 | 1162427 |
| Base 8 | 516178 | 516228 |
| Base 9 | 323079 | 323119 |
| Base 10 | 2139110 | 2139410 |
| Base 11 | 1508711 | 1508a11 |
| Base 12 | 1046712 | 1046a12 |
| Base 13 | 997613 | 997913 |
| Base 14 | 7b1d14 | 7b2214 |
| Base 15 | 651115 | 651415 |
| Base 16 | 538f16 | 539216 |