Compare 1209 vs 1220
| Property | 1209 | 1220 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 3 | 3 |
| Total factors | 3 | 4 |
| Prime factorization | 31 × 131 × 311 | 22 × 51 × 611 |
| Prime factorization | 3 × 13 × 31 | 2 × 2 × 5 × 61 |
| Divisors count | 8 | 12 |
| Divisors | 1, 3, 13, 31, 39, 93, 403, 1209 | 1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220 |
| Number of properties | 0 | 0 |
| Roman numberals | MCCIX | MCCXX |
| Base 2 | 100101110012 | 100110001002 |
| Base 3 | 11222103 | 12000123 |
| Base 4 | 1023214 | 1030104 |
| Base 5 | 143145 | 143405 |
| Base 6 | 53336 | 53526 |
| Base 7 | 33457 | 33627 |
| Base 8 | 22718 | 23048 |
| Base 9 | 15839 | 16059 |
| Base 10 | 120910 | 122010 |
| Base 11 | 9aa11 | a0a11 |
| Base 12 | 84912 | 85812 |
| Base 13 | 72013 | 72b13 |
| Base 14 | 62514 | 63214 |
| Base 15 | 55915 | 56515 |
| Base 16 | 4b916 | 4c416 |