Compare 21247 vs 21647
| Property | 21247 | 21647 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 212471 | 216471 |
| Prime factorization | 21247 | 21647 |
| Divisors count | 2 | 2 |
| Divisors | 1, 21247 | 1, 21647 |
| Number of properties | 3 | 4 |
| Chen primes | 1193rd | |
| Isolated primes | 1667th | |
| Long primes | 907th | 918th |
| Primes | 2388th | 2430th |
| Twin primes (1st member) | 370th | |
| Roman numberals | ||
| Base 2 | 1010010111111112 | 1010100100011112 |
| Base 3 | 10020102213 | 10022002023 |
| Base 4 | 110233334 | 111020334 |
| Base 5 | 11344425 | 11430425 |
| Base 6 | 2422116 | 2441156 |
| Base 7 | 1156427 | 1200537 |
| Base 8 | 513778 | 522178 |
| Base 9 | 321279 | 326229 |
| Base 10 | 2124710 | 2164710 |
| Base 11 | 14a6611 | 1529a11 |
| Base 12 | 1036712 | 1063b12 |
| Base 13 | 989513 | 9b1213 |
| Base 14 | 7a5914 | 7c6314 |
| Base 15 | 646715 | 663215 |
| Base 16 | 52ff16 | 548f16 |