Compare 1284 vs 1285
| Property | 1284 | 1285 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 4 | 2 |
| Prime factorization | 22 × 31 × 1071 | 51 × 2571 |
| Prime factorization | 2 × 2 × 3 × 107 | 5 × 257 |
| Divisors count | 12 | 4 |
| Divisors | 1, 2, 3, 4, 6, 12, 107, 214, 321, 428, 642, 1284 | 1, 5, 257, 1285 |
| Number of properties | 0 | 1 |
| Semiprimes | 378th | |
| Roman numberals | MCCLXXXIV | MCCLXXXV |
| Base 2 | 101000001002 | 101000001012 |
| Base 3 | 12021203 | 12021213 |
| Base 4 | 1100104 | 1100114 |
| Base 5 | 201145 | 201205 |
| Base 6 | 55406 | 55416 |
| Base 7 | 35137 | 35147 |
| Base 8 | 24048 | 24058 |
| Base 9 | 16769 | 16779 |
| Base 10 | 128410 | 128510 |
| Base 11 | a6811 | a6911 |
| Base 12 | 8b012 | 8b112 |
| Base 13 | 77a13 | 77b13 |
| Base 14 | 67a14 | 67b14 |
| Base 15 | 5a915 | 5aa15 |
| Base 16 | 50416 | 50516 |