Compare 21139 vs 21221
| Property | 21139 | 21221 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 211391 | 212211 |
| Prime factorization | 21139 | 21221 |
| Divisors count | 2 | 2 |
| Divisors | 1, 21139 | 1, 21221 |
| Number of properties | 5 | 6 |
| Chen primes | 1172nd | |
| Cousin primes (1st member) | 360th | |
| Good primes | 266th | |
| Isolated primes | 1656th | 1665th |
| Lucky primes | 385th | |
| Primes | 2375th | 2386th |
| Pythagorean primes | 1184th | |
| Sexy primes (1st member) | 723rd | |
| Sophie germain primes | 346th | |
| Roman numberals | ||
| Base 2 | 1010010100100112 | 1010010111001012 |
| Base 3 | 10012222213 | 10020022223 |
| Base 4 | 110221034 | 110232114 |
| Base 5 | 11340245 | 11343415 |
| Base 6 | 2415116 | 2421256 |
| Base 7 | 1154267 | 1156047 |
| Base 8 | 512238 | 513458 |
| Base 9 | 318879 | 320889 |
| Base 10 | 2113910 | 2122110 |
| Base 11 | 1497811 | 14a4211 |
| Base 12 | 1029712 | 1034512 |
| Base 13 | 981113 | 987513 |
| Base 14 | 79bd14 | 7a3b14 |
| Base 15 | 63e415 | 644b15 |
| Base 16 | 529316 | 52e516 |