Compare 987 vs 990
| Property | 987 | 990 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 3 | 4 |
| Total factors | 3 | 5 |
| Prime factorization | 31 × 71 × 471 | 21 × 32 × 51 × 111 |
| Prime factorization | 3 × 7 × 47 | 2 × 3 × 3 × 5 × 11 |
| Divisors count | 8 | 24 |
| Divisors | 1, 3, 7, 21, 47, 141, 329, 987 | 1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 165, 198, 330, 495, 990 |
| Number of properties | 0 | 0 |
| Roman numberals | CMLXXXVII | CMXC |
| Base 2 | 11110110112 | 11110111102 |
| Base 3 | 11001203 | 11002003 |
| Base 4 | 331234 | 331324 |
| Base 5 | 124225 | 124305 |
| Base 6 | 43236 | 43306 |
| Base 7 | 26107 | 26137 |
| Base 8 | 17338 | 17368 |
| Base 9 | 13169 | 13209 |
| Base 10 | 98710 | 99010 |
| Base 11 | 81811 | 82011 |
| Base 12 | 6a312 | 6a612 |
| Base 13 | 5ac13 | 5b213 |
| Base 14 | 50714 | 50a14 |
| Base 15 | 45c15 | 46015 |
| Base 16 | 3db16 | 3de16 |