Compare 21157 vs 21221
| Property | 21157 | 21221 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 211571 | 212211 |
| Prime factorization | 21157 | 21221 |
| Divisors count | 2 | 2 |
| Divisors | 1, 21157 | 1, 21221 |
| Number of properties | 5 | 6 |
| Chen primes | 1172nd | |
| Isolated primes | 1659th | 1665th |
| Primes | 2378th | 2386th |
| Pythagorean primes | 1181st | 1184th |
| Sexy primes (1st member) | 720th | 723rd |
| Sexy prime triplets (1st member) | 197th | |
| Sophie germain primes | 346th | |
| Roman numberals | ||
| Base 2 | 1010010101001012 | 1010010111001012 |
| Base 3 | 10020001213 | 10020022223 |
| Base 4 | 110222114 | 110232114 |
| Base 5 | 11341125 | 11343415 |
| Base 6 | 2415416 | 2421256 |
| Base 7 | 1154537 | 1156047 |
| Base 8 | 512458 | 513458 |
| Base 9 | 320179 | 320889 |
| Base 10 | 2115710 | 2122110 |
| Base 11 | 1499411 | 14a4211 |
| Base 12 | 102b112 | 1034512 |
| Base 13 | 982613 | 987513 |
| Base 14 | 79d314 | 7a3b14 |
| Base 15 | 640715 | 644b15 |
| Base 16 | 52a516 | 52e516 |