Compare 221 vs 254
| Property | 221 | 254 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 131 × 171 | 21 × 1271 |
| Prime factorization | 13 × 17 | 2 × 127 |
| Divisors count | 4 | 4 |
| Divisors | 1, 13, 17, 221 | 1, 2, 127, 254 |
| Number of properties | 1 | 1 |
| Semiprimes | 75th | 82nd |
| Roman numberals | CCXXI | CCLIV |
| Base 2 | 110111012 | 111111102 |
| Base 3 | 220123 | 1001023 |
| Base 4 | 31314 | 33324 |
| Base 5 | 13415 | 20045 |
| Base 6 | 10056 | 11026 |
| Base 7 | 4347 | 5127 |
| Base 8 | 3358 | 3768 |
| Base 9 | 2659 | 3129 |
| Base 10 | 22110 | 25410 |
| Base 11 | 19111 | 21111 |
| Base 12 | 16512 | 19212 |
| Base 13 | 14013 | 16713 |
| Base 14 | 11b14 | 14214 |
| Base 15 | eb15 | 11e15 |
| Base 16 | dd16 | fe16 |