Compare 247 vs 254
| Property | 247 | 254 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 131 × 191 | 21 × 1271 |
| Prime factorization | 13 × 19 | 2 × 127 |
| Divisors count | 4 | 4 |
| Divisors | 1, 13, 19, 247 | 1, 2, 127, 254 |
| Number of properties | 1 | 1 |
| Semiprimes | 79th | 82nd |
| Roman numberals | CCXLVII | CCLIV |
| Base 2 | 111101112 | 111111102 |
| Base 3 | 1000113 | 1001023 |
| Base 4 | 33134 | 33324 |
| Base 5 | 14425 | 20045 |
| Base 6 | 10516 | 11026 |
| Base 7 | 5027 | 5127 |
| Base 8 | 3678 | 3768 |
| Base 9 | 3049 | 3129 |
| Base 10 | 24710 | 25410 |
| Base 11 | 20511 | 21111 |
| Base 12 | 18712 | 19212 |
| Base 13 | 16013 | 16713 |
| Base 14 | 13914 | 14214 |
| Base 15 | 11715 | 11e15 |
| Base 16 | f716 | fe16 |