Compare 21391 vs 21401
| Property | 21391 | 21401 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 213911 | 214011 |
| Prime factorization | 21391 | 21401 |
| Divisors count | 2 | 2 |
| Divisors | 1, 21391 | 1, 21401 |
| Number of properties | 3 | 6 |
| Chen primes | 1179th | |
| Cousin primes (2nd member) | 365th | |
| Isolated primes | 1676th | 1678th |
| Primes | 2401st | 2403rd |
| Pythagorean primes | 1192nd | |
| Sexy primes (1st member) | 729th | 730th |
| Roman numberals | ||
| Base 2 | 1010011100011112 | 1010011100110012 |
| Base 3 | 10021000213 | 10021001223 |
| Base 4 | 110320334 | 110321214 |
| Base 5 | 11410315 | 11411015 |
| Base 6 | 2430116 | 2430256 |
| Base 7 | 1162367 | 1162527 |
| Base 8 | 516178 | 516318 |
| Base 9 | 323079 | 323189 |
| Base 10 | 2139110 | 2140110 |
| Base 11 | 1508711 | 1509611 |
| Base 12 | 1046712 | 1047512 |
| Base 13 | 997613 | 998313 |
| Base 14 | 7b1d14 | 7b2914 |
| Base 15 | 651115 | 651b15 |
| Base 16 | 538f16 | 539916 |