Compare 21221 vs 21347
| Property | 21221 | 21347 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 212211 | 213471 |
| Prime factorization | 21221 | 21347 |
| Divisors count | 2 | 2 |
| Divisors | 1, 21221 | 1, 21347 |
| Number of properties | 6 | 7 |
| Additive primes | 1112th | |
| Chen primes | 1172nd | 1176th |
| Happy primes | 397th | |
| Isolated primes | 1665th | 1674th |
| Primes | 2386th | 2397th |
| Pythagorean primes | 1184th | |
| Sexy primes (1st member) | 723rd | |
| Sexy primes (2nd member) | 727th | |
| Sophie germain primes | 346th | |
| Ulam primes | 182nd | |
| Roman numberals | ||
| Base 2 | 1010010111001012 | 1010011011000112 |
| Base 3 | 10020022223 | 10020211223 |
| Base 4 | 110232114 | 110312034 |
| Base 5 | 11343415 | 11403425 |
| Base 6 | 2421256 | 2424556 |
| Base 7 | 1156047 | 1161447 |
| Base 8 | 513458 | 515438 |
| Base 9 | 320889 | 322489 |
| Base 10 | 2122110 | 2134710 |
| Base 11 | 14a4211 | 1504711 |
| Base 12 | 1034512 | 1042b12 |
| Base 13 | 987513 | 994113 |
| Base 14 | 7a3b14 | 7acb14 |
| Base 15 | 644b15 | 64d215 |
| Base 16 | 52e516 | 536316 |