Compare 1209 vs 1215
| Property | 1209 | 1215 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 3 | 2 |
| Total factors | 3 | 6 |
| Prime factorization | 31 × 131 × 311 | 35 × 51 |
| Prime factorization | 3 × 13 × 31 | 3 × 3 × 3 × 3 × 3 × 5 |
| Divisors count | 8 | 12 |
| Divisors | 1, 3, 13, 31, 39, 93, 403, 1209 | 1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215 |
| Number of properties | 0 | 0 |
| Roman numberals | MCCIX | MCCXV |
| Base 2 | 100101110012 | 100101111112 |
| Base 3 | 11222103 | 12000003 |
| Base 4 | 1023214 | 1023334 |
| Base 5 | 143145 | 143305 |
| Base 6 | 53336 | 53436 |
| Base 7 | 33457 | 33547 |
| Base 8 | 22718 | 22778 |
| Base 9 | 15839 | 16009 |
| Base 10 | 120910 | 121510 |
| Base 11 | 9aa11 | a0511 |
| Base 12 | 84912 | 85312 |
| Base 13 | 72013 | 72613 |
| Base 14 | 62514 | 62b14 |
| Base 15 | 55915 | 56015 |
| Base 16 | 4b916 | 4bf16 |