Compare 201 vs 221
| Property | 201 | 221 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 31 × 671 | 131 × 171 |
| Prime factorization | 3 × 67 | 13 × 17 |
| Divisors count | 4 | 4 |
| Divisors | 1, 3, 67, 201 | 1, 13, 17, 221 |
| Number of properties | 1 | 1 |
| Semiprimes | 63rd | 75th |
| Roman numberals | CCI | CCXXI |
| Base 2 | 110010012 | 110111012 |
| Base 3 | 211103 | 220123 |
| Base 4 | 30214 | 31314 |
| Base 5 | 13015 | 13415 |
| Base 6 | 5336 | 10056 |
| Base 7 | 4057 | 4347 |
| Base 8 | 3118 | 3358 |
| Base 9 | 2439 | 2659 |
| Base 10 | 20110 | 22110 |
| Base 11 | 17311 | 19111 |
| Base 12 | 14912 | 16512 |
| Base 13 | 12613 | 14013 |
| Base 14 | 10514 | 11b14 |
| Base 15 | d615 | eb15 |
| Base 16 | c916 | dd16 |