Compare 21221 vs 21397
| Property | 21221 | 21397 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 212211 | 213971 |
| Prime factorization | 21221 | 21397 |
| Divisors count | 2 | 2 |
| Divisors | 1, 21221 | 1, 21397 |
| Number of properties | 6 | 5 |
| Chen primes | 1172nd | |
| Cousin primes (1st member) | 365th | |
| Isolated primes | 1665th | 1677th |
| Primes | 2386th | 2402nd |
| Pythagorean primes | 1184th | 1191st |
| Sexy primes (1st member) | 723rd | |
| Sexy primes (2nd member) | 729th | |
| Sophie germain primes | 346th | |
| Roman numberals | ||
| Base 2 | 1010010111001012 | 1010011100101012 |
| Base 3 | 10020022223 | 10021001113 |
| Base 4 | 110232114 | 110321114 |
| Base 5 | 11343415 | 11410425 |
| Base 6 | 2421256 | 2430216 |
| Base 7 | 1156047 | 1162457 |
| Base 8 | 513458 | 516258 |
| Base 9 | 320889 | 323149 |
| Base 10 | 2122110 | 2139710 |
| Base 11 | 14a4211 | 1509211 |
| Base 12 | 1034512 | 1047112 |
| Base 13 | 987513 | 997c13 |
| Base 14 | 7a3b14 | 7b2514 |
| Base 15 | 644b15 | 651715 |
| Base 16 | 52e516 | 539516 |