Compare 21247 vs 21255
| Property | 21247 | 21255 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 4 |
| Total factors | 1 | 4 |
| Prime factorization | 212471 | 31 × 51 × 131 × 1091 |
| Prime factorization | 21247 | 3 × 5 × 13 × 109 |
| Divisors count | 2 | 16 |
| Divisors | 1, 21247 | 1, 3, 5, 13, 15, 39, 65, 109, 195, 327, 545, 1417, 1635, 4251, 7085, 21255 |
| Number of properties | 3 | 0 |
| Isolated primes | 1667th | |
| Long primes | 907th | |
| Primes | 2388th | |
| Roman numberals | ||
| Base 2 | 1010010111111112 | 1010011000001112 |
| Base 3 | 10020102213 | 10020110203 |
| Base 4 | 110233334 | 110300134 |
| Base 5 | 11344425 | 11400105 |
| Base 6 | 2422116 | 2422236 |
| Base 7 | 1156427 | 1156537 |
| Base 8 | 513778 | 514078 |
| Base 9 | 321279 | 321369 |
| Base 10 | 2124710 | 2125510 |
| Base 11 | 14a6611 | 14a7311 |
| Base 12 | 1036712 | 1037312 |
| Base 13 | 989513 | 98a013 |
| Base 14 | 7a5914 | 7a6314 |
| Base 15 | 646715 | 647015 |
| Base 16 | 52ff16 | 530716 |