Compare 1807 vs 1809
| Property | 1807 | 1809 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 2 |
| Total factors | 2 | 4 |
| Prime factorization | 131 × 1391 | 33 × 671 |
| Prime factorization | 13 × 139 | 3 × 3 × 3 × 67 |
| Divisors count | 4 | 8 |
| Divisors | 1, 13, 139, 1807 | 1, 3, 9, 27, 67, 201, 603, 1809 |
| Number of properties | 1 | 0 |
| Semiprimes | 520th | |
| Roman numberals | MDCCCVII | MDCCCIX |
| Base 2 | 111000011112 | 111000100012 |
| Base 3 | 21102213 | 21110003 |
| Base 4 | 1300334 | 1301014 |
| Base 5 | 242125 | 242145 |
| Base 6 | 122116 | 122136 |
| Base 7 | 51617 | 51637 |
| Base 8 | 34178 | 34218 |
| Base 9 | 24279 | 24309 |
| Base 10 | 180710 | 180910 |
| Base 11 | 13a311 | 13a511 |
| Base 12 | 106712 | 106912 |
| Base 13 | a9013 | a9213 |
| Base 14 | 93114 | 93314 |
| Base 15 | 80715 | 80915 |
| Base 16 | 70f16 | 71116 |