Compare 1581 vs 1587
| Property | 1581 | 1587 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 3 | 2 |
| Total factors | 3 | 3 |
| Prime factorization | 31 × 171 × 311 | 31 × 232 |
| Prime factorization | 3 × 17 × 31 | 3 × 23 × 23 |
| Divisors count | 8 | 6 |
| Divisors | 1, 3, 17, 31, 51, 93, 527, 1581 | 1, 3, 23, 69, 529, 1587 |
| Number of properties | 0 | 0 |
| Roman numberals | MDLXXXI | MDLXXXVII |
| Base 2 | 110001011012 | 110001100112 |
| Base 3 | 20111203 | 20112103 |
| Base 4 | 1202314 | 1203034 |
| Base 5 | 223115 | 223225 |
| Base 6 | 111536 | 112036 |
| Base 7 | 44167 | 44257 |
| Base 8 | 30558 | 30638 |
| Base 9 | 21469 | 21539 |
| Base 10 | 158110 | 158710 |
| Base 11 | 120811 | 121311 |
| Base 12 | ab912 | b0312 |
| Base 13 | 94813 | 95113 |
| Base 14 | 80d14 | 81514 |
| Base 15 | 70615 | 70c15 |
| Base 16 | 62d16 | 63316 |