Compare 21391 vs 21392
| Property | 21391 | 21392 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 6 |
| Prime factorization | 213911 | 24 × 71 × 1911 |
| Prime factorization | 21391 | 2 × 2 × 2 × 2 × 7 × 191 |
| Divisors count | 2 | 20 |
| Divisors | 1, 21391 | 1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 191, 382, 764, 1337, 1528, 2674, 3056, 5348, 10696, 21392 |
| Number of properties | 3 | 0 |
| Isolated primes | 1676th | |
| Primes | 2401st | |
| Sexy primes (1st member) | 729th | |
| Roman numberals | ||
| Base 2 | 1010011100011112 | 1010011100100002 |
| Base 3 | 10021000213 | 10021000223 |
| Base 4 | 110320334 | 110321004 |
| Base 5 | 11410315 | 11410325 |
| Base 6 | 2430116 | 2430126 |
| Base 7 | 1162367 | 1162407 |
| Base 8 | 516178 | 516208 |
| Base 9 | 323079 | 323089 |
| Base 10 | 2139110 | 2139210 |
| Base 11 | 1508711 | 1508811 |
| Base 12 | 1046712 | 1046812 |
| Base 13 | 997613 | 997713 |
| Base 14 | 7b1d14 | 7b2014 |
| Base 15 | 651115 | 651215 |
| Base 16 | 538f16 | 539016 |