Compare 990 vs 1001
| Property | 990 | 1001 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 4 | 3 |
| Total factors | 5 | 3 |
| Prime factorization | 21 × 32 × 51 × 111 | 71 × 111 × 131 |
| Prime factorization | 2 × 3 × 3 × 5 × 11 | 7 × 11 × 13 |
| Divisors count | 24 | 8 |
| Divisors | 1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 165, 198, 330, 495, 990 | 1, 7, 11, 13, 77, 91, 143, 1001 |
| Number of properties | 0 | 0 |
| Roman numberals | CMXC | MI |
| Base 2 | 11110111102 | 11111010012 |
| Base 3 | 11002003 | 11010023 |
| Base 4 | 331324 | 332214 |
| Base 5 | 124305 | 130015 |
| Base 6 | 43306 | 43456 |
| Base 7 | 26137 | 26307 |
| Base 8 | 17368 | 17518 |
| Base 9 | 13209 | 13329 |
| Base 10 | 99010 | 100110 |
| Base 11 | 82011 | 83011 |
| Base 12 | 6a612 | 6b512 |
| Base 13 | 5b213 | 5c013 |
| Base 14 | 50a14 | 51714 |
| Base 15 | 46015 | 46b15 |
| Base 16 | 3de16 | 3e916 |