Compare 209 vs 210
| Property | 209 | 210 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 4 |
| Total factors | 2 | 4 |
| Prime factorization | 111 × 191 | 21 × 31 × 51 × 71 |
| Prime factorization | 11 × 19 | 2 × 3 × 5 × 7 |
| Divisors count | 4 | 16 |
| Divisors | 1, 11, 19, 209 | 1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210 |
| Number of properties | 1 | 0 |
| Semiprimes | 68th | |
| Roman numberals | CCIX | CCX |
| Base 2 | 110100012 | 110100102 |
| Base 3 | 212023 | 212103 |
| Base 4 | 31014 | 31024 |
| Base 5 | 13145 | 13205 |
| Base 6 | 5456 | 5506 |
| Base 7 | 4167 | 4207 |
| Base 8 | 3218 | 3228 |
| Base 9 | 2529 | 2539 |
| Base 10 | 20910 | 21010 |
| Base 11 | 18011 | 18111 |
| Base 12 | 15512 | 15612 |
| Base 13 | 13113 | 13213 |
| Base 14 | 10d14 | 11014 |
| Base 15 | de15 | e015 |
| Base 16 | d116 | d216 |