Compare 209 vs 247
| Property | 209 | 247 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 111 × 191 | 131 × 191 |
| Prime factorization | 11 × 19 | 13 × 19 |
| Divisors count | 4 | 4 |
| Divisors | 1, 11, 19, 209 | 1, 13, 19, 247 |
| Number of properties | 1 | 1 |
| Semiprimes | 68th | 79th |
| Roman numberals | CCIX | CCXLVII |
| Base 2 | 110100012 | 111101112 |
| Base 3 | 212023 | 1000113 |
| Base 4 | 31014 | 33134 |
| Base 5 | 13145 | 14425 |
| Base 6 | 5456 | 10516 |
| Base 7 | 4167 | 5027 |
| Base 8 | 3218 | 3678 |
| Base 9 | 2529 | 3049 |
| Base 10 | 20910 | 24710 |
| Base 11 | 18011 | 20511 |
| Base 12 | 15512 | 18712 |
| Base 13 | 13113 | 16013 |
| Base 14 | 10d14 | 13914 |
| Base 15 | de15 | 11715 |
| Base 16 | d116 | f716 |