Compare 1221 vs 1228
| Property | 1221 | 1228 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 3 | 2 |
| Total factors | 3 | 3 |
| Prime factorization | 31 × 111 × 371 | 22 × 3071 |
| Prime factorization | 3 × 11 × 37 | 2 × 2 × 307 |
| Divisors count | 8 | 6 |
| Divisors | 1, 3, 11, 33, 37, 111, 407, 1221 | 1, 2, 4, 307, 614, 1228 |
| Number of properties | 0 | 0 |
| Roman numberals | MCCXXI | MCCXXVIII |
| Base 2 | 100110001012 | 100110011002 |
| Base 3 | 12000203 | 12001113 |
| Base 4 | 1030114 | 1030304 |
| Base 5 | 143415 | 144035 |
| Base 6 | 53536 | 54046 |
| Base 7 | 33637 | 34037 |
| Base 8 | 23058 | 23148 |
| Base 9 | 16069 | 16149 |
| Base 10 | 122110 | 122810 |
| Base 11 | a1011 | a1711 |
| Base 12 | 85912 | 86412 |
| Base 13 | 72c13 | 73613 |
| Base 14 | 63314 | 63a14 |
| Base 15 | 56615 | 56d15 |
| Base 16 | 4c516 | 4cc16 |