Compare 77 vs 91
| Property | 77 | 91 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 71 × 111 | 71 × 131 |
| Prime factorization | 7 × 11 | 7 × 13 |
| Divisors count | 4 | 4 |
| Divisors | 1, 7, 11, 77 | 1, 7, 13, 91 |
| Number of properties | 1 | 1 |
| Semiprimes | 26th | 31st |
| Roman numberals | LXXVII | XCI |
| Base 2 | 10011012 | 10110112 |
| Base 3 | 22123 | 101013 |
| Base 4 | 10314 | 11234 |
| Base 5 | 3025 | 3315 |
| Base 6 | 2056 | 2316 |
| Base 7 | 1407 | 1607 |
| Base 8 | 1158 | 1338 |
| Base 9 | 859 | 1119 |
| Base 10 | 7710 | 9110 |
| Base 11 | 7011 | 8311 |
| Base 12 | 6512 | 7712 |
| Base 13 | 5c13 | 7013 |
| Base 14 | 5714 | 6714 |
| Base 15 | 5215 | 6115 |
| Base 16 | 4d16 | 5b16 |