Compare 221 vs 230
| Property | 221 | 230 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 3 |
| Total factors | 2 | 3 |
| Prime factorization | 131 × 171 | 21 × 51 × 231 |
| Prime factorization | 13 × 17 | 2 × 5 × 23 |
| Divisors count | 4 | 8 |
| Divisors | 1, 13, 17, 221 | 1, 2, 5, 10, 23, 46, 115, 230 |
| Number of properties | 1 | 0 |
| Semiprimes | 75th | |
| Roman numberals | CCXXI | CCXXX |
| Base 2 | 110111012 | 111001102 |
| Base 3 | 220123 | 221123 |
| Base 4 | 31314 | 32124 |
| Base 5 | 13415 | 14105 |
| Base 6 | 10056 | 10226 |
| Base 7 | 4347 | 4467 |
| Base 8 | 3358 | 3468 |
| Base 9 | 2659 | 2759 |
| Base 10 | 22110 | 23010 |
| Base 11 | 19111 | 19a11 |
| Base 12 | 16512 | 17212 |
| Base 13 | 14013 | 14913 |
| Base 14 | 11b14 | 12614 |
| Base 15 | eb15 | 10515 |
| Base 16 | dd16 | e616 |