Compare 1216 vs 1221
| Property | 1216 | 1221 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 2 | 3 |
| Total factors | 7 | 3 |
| Prime factorization | 26 × 191 | 31 × 111 × 371 |
| Prime factorization | 2 × 2 × 2 × 2 × 2 × 2 × 19 | 3 × 11 × 37 |
| Divisors count | 14 | 8 |
| Divisors | 1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 152, 304, 608, 1216 | 1, 3, 11, 33, 37, 111, 407, 1221 |
| Number of properties | 0 | 0 |
| Roman numberals | MCCXVI | MCCXXI |
| Base 2 | 100110000002 | 100110001012 |
| Base 3 | 12000013 | 12000203 |
| Base 4 | 1030004 | 1030114 |
| Base 5 | 143315 | 143415 |
| Base 6 | 53446 | 53536 |
| Base 7 | 33557 | 33637 |
| Base 8 | 23008 | 23058 |
| Base 9 | 16019 | 16069 |
| Base 10 | 121610 | 122110 |
| Base 11 | a0611 | a1011 |
| Base 12 | 85412 | 85912 |
| Base 13 | 72713 | 72c13 |
| Base 14 | 62c14 | 63314 |
| Base 15 | 56115 | 56615 |
| Base 16 | 4c016 | 4c516 |