Compare 1809 vs 1815
| Property | 1809 | 1815 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 2 | 3 |
| Total factors | 4 | 4 |
| Prime factorization | 33 × 671 | 31 × 51 × 112 |
| Prime factorization | 3 × 3 × 3 × 67 | 3 × 5 × 11 × 11 |
| Divisors count | 8 | 12 |
| Divisors | 1, 3, 9, 27, 67, 201, 603, 1809 | 1, 3, 5, 11, 15, 33, 55, 121, 165, 363, 605, 1815 |
| Number of properties | 0 | 0 |
| Roman numberals | MDCCCIX | MDCCCXV |
| Base 2 | 111000100012 | 111000101112 |
| Base 3 | 21110003 | 21110203 |
| Base 4 | 1301014 | 1301134 |
| Base 5 | 242145 | 242305 |
| Base 6 | 122136 | 122236 |
| Base 7 | 51637 | 52027 |
| Base 8 | 34218 | 34278 |
| Base 9 | 24309 | 24369 |
| Base 10 | 180910 | 181510 |
| Base 11 | 13a511 | 140011 |
| Base 12 | 106912 | 107312 |
| Base 13 | a9213 | a9813 |
| Base 14 | 93314 | 93914 |
| Base 15 | 80915 | 81015 |
| Base 16 | 71116 | 71716 |