Compare 221 vs 249
| Property | 221 | 249 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 131 × 171 | 31 × 831 |
| Prime factorization | 13 × 17 | 3 × 83 |
| Divisors count | 4 | 4 |
| Divisors | 1, 13, 17, 221 | 1, 3, 83, 249 |
| Number of properties | 1 | 1 |
| Semiprimes | 75th | 80th |
| Roman numberals | CCXXI | CCXLIX |
| Base 2 | 110111012 | 111110012 |
| Base 3 | 220123 | 1000203 |
| Base 4 | 31314 | 33214 |
| Base 5 | 13415 | 14445 |
| Base 6 | 10056 | 10536 |
| Base 7 | 4347 | 5047 |
| Base 8 | 3358 | 3718 |
| Base 9 | 2659 | 3069 |
| Base 10 | 22110 | 24910 |
| Base 11 | 19111 | 20711 |
| Base 12 | 16512 | 18912 |
| Base 13 | 14013 | 16213 |
| Base 14 | 11b14 | 13b14 |
| Base 15 | eb15 | 11915 |
| Base 16 | dd16 | f916 |