Compare 987 vs 989
| Property | 987 | 989 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 3 | 2 |
| Prime factorization | 31 × 71 × 471 | 231 × 431 |
| Prime factorization | 3 × 7 × 47 | 23 × 43 |
| Divisors count | 8 | 4 |
| Divisors | 1, 3, 7, 21, 47, 141, 329, 987 | 1, 23, 43, 989 |
| Number of properties | 0 | 1 |
| Semiprimes | 296th | |
| Roman numberals | CMLXXXVII | CMLXXXIX |
| Base 2 | 11110110112 | 11110111012 |
| Base 3 | 11001203 | 11001223 |
| Base 4 | 331234 | 331314 |
| Base 5 | 124225 | 124245 |
| Base 6 | 43236 | 43256 |
| Base 7 | 26107 | 26127 |
| Base 8 | 17338 | 17358 |
| Base 9 | 13169 | 13189 |
| Base 10 | 98710 | 98910 |
| Base 11 | 81811 | 81a11 |
| Base 12 | 6a312 | 6a512 |
| Base 13 | 5ac13 | 5b113 |
| Base 14 | 50714 | 50914 |
| Base 15 | 45c15 | 45e15 |
| Base 16 | 3db16 | 3dd16 |