Compare 1581 vs 1590
| Property | 1581 | 1590 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 3 | 4 |
| Total factors | 3 | 4 |
| Prime factorization | 31 × 171 × 311 | 21 × 31 × 51 × 531 |
| Prime factorization | 3 × 17 × 31 | 2 × 3 × 5 × 53 |
| Divisors count | 8 | 16 |
| Divisors | 1, 3, 17, 31, 51, 93, 527, 1581 | 1, 2, 3, 5, 6, 10, 15, 30, 53, 106, 159, 265, 318, 530, 795, 1590 |
| Number of properties | 0 | 0 |
| Roman numberals | MDLXXXI | MDXC |
| Base 2 | 110001011012 | 110001101102 |
| Base 3 | 20111203 | 20112203 |
| Base 4 | 1202314 | 1203124 |
| Base 5 | 223115 | 223305 |
| Base 6 | 111536 | 112106 |
| Base 7 | 44167 | 44317 |
| Base 8 | 30558 | 30668 |
| Base 9 | 21469 | 21569 |
| Base 10 | 158110 | 159010 |
| Base 11 | 120811 | 121611 |
| Base 12 | ab912 | b0612 |
| Base 13 | 94813 | 95413 |
| Base 14 | 80d14 | 81814 |
| Base 15 | 70615 | 71015 |
| Base 16 | 62d16 | 63616 |