Compare 391 vs 427
| Property | 391 | 427 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 171 × 231 | 71 × 611 |
| Prime factorization | 17 × 23 | 7 × 61 |
| Divisors count | 4 | 4 |
| Divisors | 1, 17, 23, 391 | 1, 7, 61, 427 |
| Number of properties | 1 | 1 |
| Semiprimes | 122nd | 134th |
| Roman numberals | CCCXCI | CDXXVII |
| Base 2 | 1100001112 | 1101010112 |
| Base 3 | 1121113 | 1202113 |
| Base 4 | 120134 | 122234 |
| Base 5 | 30315 | 32025 |
| Base 6 | 14516 | 15516 |
| Base 7 | 10667 | 11507 |
| Base 8 | 6078 | 6538 |
| Base 9 | 4749 | 5249 |
| Base 10 | 39110 | 42710 |
| Base 11 | 32611 | 35911 |
| Base 12 | 28712 | 2b712 |
| Base 13 | 24113 | 26b13 |
| Base 14 | 1dd14 | 22714 |
| Base 15 | 1b115 | 1d715 |
| Base 16 | 18716 | 1ab16 |