Compare 385 vs 391
| Property | 385 | 391 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 3 | 2 |
| Prime factorization | 51 × 71 × 111 | 171 × 231 |
| Prime factorization | 5 × 7 × 11 | 17 × 23 |
| Divisors count | 8 | 4 |
| Divisors | 1, 5, 7, 11, 35, 55, 77, 385 | 1, 17, 23, 391 |
| Number of properties | 0 | 1 |
| Semiprimes | 122nd | |
| Roman numberals | CCCLXXXV | CCCXCI |
| Base 2 | 1100000012 | 1100001112 |
| Base 3 | 1120213 | 1121113 |
| Base 4 | 120014 | 120134 |
| Base 5 | 30205 | 30315 |
| Base 6 | 14416 | 14516 |
| Base 7 | 10607 | 10667 |
| Base 8 | 6018 | 6078 |
| Base 9 | 4679 | 4749 |
| Base 10 | 38510 | 39110 |
| Base 11 | 32011 | 32611 |
| Base 12 | 28112 | 28712 |
| Base 13 | 23813 | 24113 |
| Base 14 | 1d714 | 1dd14 |
| Base 15 | 1aa15 | 1b115 |
| Base 16 | 18116 | 18716 |