Compare 209 vs 217
| Property | 209 | 217 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 111 × 191 | 71 × 311 |
| Prime factorization | 11 × 19 | 7 × 31 |
| Divisors count | 4 | 4 |
| Divisors | 1, 11, 19, 209 | 1, 7, 31, 217 |
| Number of properties | 1 | 1 |
| Semiprimes | 68th | 72nd |
| Roman numberals | CCIX | CCXVII |
| Base 2 | 110100012 | 110110012 |
| Base 3 | 212023 | 220013 |
| Base 4 | 31014 | 31214 |
| Base 5 | 13145 | 13325 |
| Base 6 | 5456 | 10016 |
| Base 7 | 4167 | 4307 |
| Base 8 | 3218 | 3318 |
| Base 9 | 2529 | 2619 |
| Base 10 | 20910 | 21710 |
| Base 11 | 18011 | 18811 |
| Base 12 | 15512 | 16112 |
| Base 13 | 13113 | 13913 |
| Base 14 | 10d14 | 11714 |
| Base 15 | de15 | e715 |
| Base 16 | d116 | d916 |