Compare 286 vs 287
| Property | 286 | 287 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 3 | 2 |
| Prime factorization | 21 × 111 × 131 | 71 × 411 |
| Prime factorization | 2 × 11 × 13 | 7 × 41 |
| Divisors count | 8 | 4 |
| Divisors | 1, 2, 11, 13, 22, 26, 143, 286 | 1, 7, 41, 287 |
| Number of properties | 0 | 1 |
| Semiprimes | 89th | |
| Roman numberals | CCLXXXVI | CCLXXXVII |
| Base 2 | 1000111102 | 1000111112 |
| Base 3 | 1011213 | 1011223 |
| Base 4 | 101324 | 101334 |
| Base 5 | 21215 | 21225 |
| Base 6 | 11546 | 11556 |
| Base 7 | 5567 | 5607 |
| Base 8 | 4368 | 4378 |
| Base 9 | 3479 | 3489 |
| Base 10 | 28610 | 28710 |
| Base 11 | 24011 | 24111 |
| Base 12 | 1ba12 | 1bb12 |
| Base 13 | 19013 | 19113 |
| Base 14 | 16614 | 16714 |
| Base 15 | 14115 | 14215 |
| Base 16 | 11e16 | 11f16 |