Compare 65 vs 91
| Property | 65 | 91 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 51 × 131 | 71 × 131 |
| Prime factorization | 5 × 13 | 7 × 13 |
| Divisors count | 4 | 4 |
| Divisors | 1, 5, 13, 65 | 1, 7, 13, 91 |
| Number of properties | 1 | 1 |
| Semiprimes | 23rd | 31st |
| Roman numberals | LXV | XCI |
| Base 2 | 10000012 | 10110112 |
| Base 3 | 21023 | 101013 |
| Base 4 | 10014 | 11234 |
| Base 5 | 2305 | 3315 |
| Base 6 | 1456 | 2316 |
| Base 7 | 1227 | 1607 |
| Base 8 | 1018 | 1338 |
| Base 9 | 729 | 1119 |
| Base 10 | 6510 | 9110 |
| Base 11 | 5a11 | 8311 |
| Base 12 | 5512 | 7712 |
| Base 13 | 5013 | 7013 |
| Base 14 | 4914 | 6714 |
| Base 15 | 4515 | 6115 |
| Base 16 | 4116 | 5b16 |