Compare 247 vs 278
| Property | 247 | 278 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 131 × 191 | 21 × 1391 |
| Prime factorization | 13 × 19 | 2 × 139 |
| Divisors count | 4 | 4 |
| Divisors | 1, 13, 19, 247 | 1, 2, 139, 278 |
| Number of properties | 1 | 1 |
| Semiprimes | 79th | 88th |
| Roman numberals | CCXLVII | CCLXXVIII |
| Base 2 | 111101112 | 1000101102 |
| Base 3 | 1000113 | 1010223 |
| Base 4 | 33134 | 101124 |
| Base 5 | 14425 | 21035 |
| Base 6 | 10516 | 11426 |
| Base 7 | 5027 | 5457 |
| Base 8 | 3678 | 4268 |
| Base 9 | 3049 | 3389 |
| Base 10 | 24710 | 27810 |
| Base 11 | 20511 | 23311 |
| Base 12 | 18712 | 1b212 |
| Base 13 | 16013 | 18513 |
| Base 14 | 13914 | 15c14 |
| Base 15 | 11715 | 13815 |
| Base 16 | f716 | 11616 |