Compare 278 vs 287
| Property | 278 | 287 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 21 × 1391 | 71 × 411 |
| Prime factorization | 2 × 139 | 7 × 41 |
| Divisors count | 4 | 4 |
| Divisors | 1, 2, 139, 278 | 1, 7, 41, 287 |
| Number of properties | 1 | 1 |
| Semiprimes | 88th | 89th |
| Roman numberals | CCLXXVIII | CCLXXXVII |
| Base 2 | 1000101102 | 1000111112 |
| Base 3 | 1010223 | 1011223 |
| Base 4 | 101124 | 101334 |
| Base 5 | 21035 | 21225 |
| Base 6 | 11426 | 11556 |
| Base 7 | 5457 | 5607 |
| Base 8 | 4268 | 4378 |
| Base 9 | 3389 | 3489 |
| Base 10 | 27810 | 28710 |
| Base 11 | 23311 | 24111 |
| Base 12 | 1b212 | 1bb12 |
| Base 13 | 18513 | 19113 |
| Base 14 | 15c14 | 16714 |
| Base 15 | 13815 | 14215 |
| Base 16 | 11616 | 11f16 |