Compare 21247 vs 21257
| Property | 21247 | 21257 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 212471 | 291 × 7331 |
| Prime factorization | 21247 | 29 × 733 |
| Divisors count | 2 | 4 |
| Divisors | 1, 21247 | 1, 29, 733, 21257 |
| Number of properties | 3 | 1 |
| Isolated primes | 1667th | |
| Long primes | 907th | |
| Primes | 2388th | |
| Semiprimes | 5386th | |
| Roman numberals | ||
| Base 2 | 1010010111111112 | 1010011000010012 |
| Base 3 | 10020102213 | 10020110223 |
| Base 4 | 110233334 | 110300214 |
| Base 5 | 11344425 | 11400125 |
| Base 6 | 2422116 | 2422256 |
| Base 7 | 1156427 | 1156557 |
| Base 8 | 513778 | 514118 |
| Base 9 | 321279 | 321389 |
| Base 10 | 2124710 | 2125710 |
| Base 11 | 14a6611 | 14a7511 |
| Base 12 | 1036712 | 1037512 |
| Base 13 | 989513 | 98a213 |
| Base 14 | 7a5914 | 7a6514 |
| Base 15 | 646715 | 647215 |
| Base 16 | 52ff16 | 530916 |