Compare 1209 vs 1218
| Property | 1209 | 1218 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 3 | 4 |
| Total factors | 3 | 4 |
| Prime factorization | 31 × 131 × 311 | 21 × 31 × 71 × 291 |
| Prime factorization | 3 × 13 × 31 | 2 × 3 × 7 × 29 |
| Divisors count | 8 | 16 |
| Divisors | 1, 3, 13, 31, 39, 93, 403, 1209 | 1, 2, 3, 6, 7, 14, 21, 29, 42, 58, 87, 174, 203, 406, 609, 1218 |
| Number of properties | 0 | 0 |
| Roman numberals | MCCIX | MCCXVIII |
| Base 2 | 100101110012 | 100110000102 |
| Base 3 | 11222103 | 12000103 |
| Base 4 | 1023214 | 1030024 |
| Base 5 | 143145 | 143335 |
| Base 6 | 53336 | 53506 |
| Base 7 | 33457 | 33607 |
| Base 8 | 22718 | 23028 |
| Base 9 | 15839 | 16039 |
| Base 10 | 120910 | 121810 |
| Base 11 | 9aa11 | a0811 |
| Base 12 | 84912 | 85612 |
| Base 13 | 72013 | 72913 |
| Base 14 | 62514 | 63014 |
| Base 15 | 55915 | 56315 |
| Base 16 | 4b916 | 4c216 |