Compare 201 vs 209
| Property | 201 | 209 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 31 × 671 | 111 × 191 |
| Prime factorization | 3 × 67 | 11 × 19 |
| Divisors count | 4 | 4 |
| Divisors | 1, 3, 67, 201 | 1, 11, 19, 209 |
| Number of properties | 1 | 1 |
| Semiprimes | 63rd | 68th |
| Roman numberals | CCI | CCIX |
| Base 2 | 110010012 | 110100012 |
| Base 3 | 211103 | 212023 |
| Base 4 | 30214 | 31014 |
| Base 5 | 13015 | 13145 |
| Base 6 | 5336 | 5456 |
| Base 7 | 4057 | 4167 |
| Base 8 | 3118 | 3218 |
| Base 9 | 2439 | 2529 |
| Base 10 | 20110 | 20910 |
| Base 11 | 17311 | 18011 |
| Base 12 | 14912 | 15512 |
| Base 13 | 12613 | 13113 |
| Base 14 | 10514 | 10d14 |
| Base 15 | d615 | de15 |
| Base 16 | c916 | d116 |