Compare 212 vs 221
| Property | 212 | 221 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 3 | 2 |
| Prime factorization | 22 × 531 | 131 × 171 |
| Prime factorization | 2 × 2 × 53 | 13 × 17 |
| Divisors count | 6 | 4 |
| Divisors | 1, 2, 4, 53, 106, 212 | 1, 13, 17, 221 |
| Number of properties | 0 | 1 |
| Semiprimes | 75th | |
| Roman numberals | CCXII | CCXXI |
| Base 2 | 110101002 | 110111012 |
| Base 3 | 212123 | 220123 |
| Base 4 | 31104 | 31314 |
| Base 5 | 13225 | 13415 |
| Base 6 | 5526 | 10056 |
| Base 7 | 4227 | 4347 |
| Base 8 | 3248 | 3358 |
| Base 9 | 2559 | 2659 |
| Base 10 | 21210 | 22110 |
| Base 11 | 18311 | 19111 |
| Base 12 | 15812 | 16512 |
| Base 13 | 13413 | 14013 |
| Base 14 | 11214 | 11b14 |
| Base 15 | e215 | eb15 |
| Base 16 | d416 | dd16 |