Compare 1809 vs 1818
| Property | 1809 | 1818 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 2 | 3 |
| Total factors | 4 | 4 |
| Prime factorization | 33 × 671 | 21 × 32 × 1011 |
| Prime factorization | 3 × 3 × 3 × 67 | 2 × 3 × 3 × 101 |
| Divisors count | 8 | 12 |
| Divisors | 1, 3, 9, 27, 67, 201, 603, 1809 | 1, 2, 3, 6, 9, 18, 101, 202, 303, 606, 909, 1818 |
| Number of properties | 0 | 0 |
| Roman numberals | MDCCCIX | MDCCCXVIII |
| Base 2 | 111000100012 | 111000110102 |
| Base 3 | 21110003 | 21111003 |
| Base 4 | 1301014 | 1301224 |
| Base 5 | 242145 | 242335 |
| Base 6 | 122136 | 122306 |
| Base 7 | 51637 | 52057 |
| Base 8 | 34218 | 34328 |
| Base 9 | 24309 | 24409 |
| Base 10 | 180910 | 181810 |
| Base 11 | 13a511 | 140311 |
| Base 12 | 106912 | 107612 |
| Base 13 | a9213 | a9b13 |
| Base 14 | 93314 | 93c14 |
| Base 15 | 80915 | 81315 |
| Base 16 | 71116 | 71a16 |