Compare 217 vs 247
| Property | 217 | 247 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 71 × 311 | 131 × 191 |
| Prime factorization | 7 × 31 | 13 × 19 |
| Divisors count | 4 | 4 |
| Divisors | 1, 7, 31, 217 | 1, 13, 19, 247 |
| Number of properties | 1 | 1 |
| Semiprimes | 72nd | 79th |
| Roman numberals | CCXVII | CCXLVII |
| Base 2 | 110110012 | 111101112 |
| Base 3 | 220013 | 1000113 |
| Base 4 | 31214 | 33134 |
| Base 5 | 13325 | 14425 |
| Base 6 | 10016 | 10516 |
| Base 7 | 4307 | 5027 |
| Base 8 | 3318 | 3678 |
| Base 9 | 2619 | 3049 |
| Base 10 | 21710 | 24710 |
| Base 11 | 18811 | 20511 |
| Base 12 | 16112 | 18712 |
| Base 13 | 13913 | 16013 |
| Base 14 | 11714 | 13914 |
| Base 15 | e715 | 11715 |
| Base 16 | d916 | f716 |