Compare 1580 vs 1585
| Property | 1580 | 1585 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 4 | 2 |
| Prime factorization | 22 × 51 × 791 | 51 × 3171 |
| Prime factorization | 2 × 2 × 5 × 79 | 5 × 317 |
| Divisors count | 12 | 4 |
| Divisors | 1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580 | 1, 5, 317, 1585 |
| Number of properties | 0 | 1 |
| Semiprimes | 459th | |
| Roman numberals | MDLXXX | MDLXXXV |
| Base 2 | 110001011002 | 110001100012 |
| Base 3 | 20111123 | 20112013 |
| Base 4 | 1202304 | 1203014 |
| Base 5 | 223105 | 223205 |
| Base 6 | 111526 | 112016 |
| Base 7 | 44157 | 44237 |
| Base 8 | 30548 | 30618 |
| Base 9 | 21459 | 21519 |
| Base 10 | 158010 | 158510 |
| Base 11 | 120711 | 121111 |
| Base 12 | ab812 | b0112 |
| Base 13 | 94713 | 94c13 |
| Base 14 | 80c14 | 81314 |
| Base 15 | 70515 | 70a15 |
| Base 16 | 62c16 | 63116 |