Compare 220 vs 221
| Property | 220 | 221 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 4 | 2 |
| Prime factorization | 22 × 51 × 111 | 131 × 171 |
| Prime factorization | 2 × 2 × 5 × 11 | 13 × 17 |
| Divisors count | 12 | 4 |
| Divisors | 1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220 | 1, 13, 17, 221 |
| Number of properties | 0 | 1 |
| Semiprimes | 75th | |
| Roman numberals | CCXX | CCXXI |
| Base 2 | 110111002 | 110111012 |
| Base 3 | 220113 | 220123 |
| Base 4 | 31304 | 31314 |
| Base 5 | 13405 | 13415 |
| Base 6 | 10046 | 10056 |
| Base 7 | 4337 | 4347 |
| Base 8 | 3348 | 3358 |
| Base 9 | 2649 | 2659 |
| Base 10 | 22010 | 22110 |
| Base 11 | 19011 | 19111 |
| Base 12 | 16412 | 16512 |
| Base 13 | 13c13 | 14013 |
| Base 14 | 11a14 | 11b14 |
| Base 15 | ea15 | eb15 |
| Base 16 | dc16 | dd16 |