Compare 1280 vs 1287
| Property | 1280 | 1287 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 2 | 3 |
| Total factors | 9 | 4 |
| Prime factorization | 28 × 51 | 32 × 111 × 131 |
| Prime factorization | 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 | 3 × 3 × 11 × 13 |
| Divisors count | 18 | 12 |
| Divisors | 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280 | 1, 3, 9, 11, 13, 33, 39, 99, 117, 143, 429, 1287 |
| Number of properties | 0 | 0 |
| Roman numberals | MCCLXXX | MCCLXXXVII |
| Base 2 | 101000000002 | 101000001112 |
| Base 3 | 12021023 | 12022003 |
| Base 4 | 1100004 | 1100134 |
| Base 5 | 201105 | 201225 |
| Base 6 | 55326 | 55436 |
| Base 7 | 35067 | 35167 |
| Base 8 | 24008 | 24078 |
| Base 9 | 16729 | 16809 |
| Base 10 | 128010 | 128710 |
| Base 11 | a6411 | a7011 |
| Base 12 | 8a812 | 8b312 |
| Base 13 | 77613 | 78013 |
| Base 14 | 67614 | 67d14 |
| Base 15 | 5a515 | 5ac15 |
| Base 16 | 50016 | 50716 |