Compare 86 vs 91
| Property | 86 | 91 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 21 × 431 | 71 × 131 |
| Prime factorization | 2 × 43 | 7 × 13 |
| Divisors count | 4 | 4 |
| Divisors | 1, 2, 43, 86 | 1, 7, 13, 91 |
| Number of properties | 1 | 1 |
| Semiprimes | 29th | 31st |
| Roman numberals | LXXXVI | XCI |
| Base 2 | 10101102 | 10110112 |
| Base 3 | 100123 | 101013 |
| Base 4 | 11124 | 11234 |
| Base 5 | 3215 | 3315 |
| Base 6 | 2226 | 2316 |
| Base 7 | 1527 | 1607 |
| Base 8 | 1268 | 1338 |
| Base 9 | 1059 | 1119 |
| Base 10 | 8610 | 9110 |
| Base 11 | 7911 | 8311 |
| Base 12 | 7212 | 7712 |
| Base 13 | 6813 | 7013 |
| Base 14 | 6214 | 6714 |
| Base 15 | 5b15 | 6115 |
| Base 16 | 5616 | 5b16 |