Compare 21219 vs 21221
| Property | 21219 | 21221 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 31 × 111 × 6431 | 212211 |
| Prime factorization | 3 × 11 × 643 | 21221 |
| Divisors count | 8 | 2 |
| Divisors | 1, 3, 11, 33, 643, 1929, 7073, 21219 | 1, 21221 |
| Number of properties | 0 | 6 |
| Chen primes | 1172nd | |
| Isolated primes | 1665th | |
| Primes | 2386th | |
| Pythagorean primes | 1184th | |
| Sexy primes (1st member) | 723rd | |
| Sophie germain primes | 346th | |
| Roman numberals | ||
| Base 2 | 1010010111000112 | 1010010111001012 |
| Base 3 | 10020022203 | 10020022223 |
| Base 4 | 110232034 | 110232114 |
| Base 5 | 11343345 | 11343415 |
| Base 6 | 2421236 | 2421256 |
| Base 7 | 1156027 | 1156047 |
| Base 8 | 513438 | 513458 |
| Base 9 | 320869 | 320889 |
| Base 10 | 2121910 | 2122110 |
| Base 11 | 14a4011 | 14a4211 |
| Base 12 | 1034312 | 1034512 |
| Base 13 | 987313 | 987513 |
| Base 14 | 7a3914 | 7a3b14 |
| Base 15 | 644915 | 644b15 |
| Base 16 | 52e316 | 52e516 |