Compare 91 vs 100
| Property | 91 | 100 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 2 |
| Total factors | 2 | 4 |
| Prime factorization | 71 × 131 | 22 × 52 |
| Prime factorization | 7 × 13 | 2 × 2 × 5 × 5 |
| Divisors count | 4 | 9 |
| Divisors | 1, 7, 13, 91 | 1, 2, 4, 5, 10, 20, 25, 50, 100 |
| Number of properties | 1 | 0 |
| Semiprimes | 31st | |
| Roman numberals | XCI | C |
| Base 2 | 10110112 | 11001002 |
| Base 3 | 101013 | 102013 |
| Base 4 | 11234 | 12104 |
| Base 5 | 3315 | 4005 |
| Base 6 | 2316 | 2446 |
| Base 7 | 1607 | 2027 |
| Base 8 | 1338 | 1448 |
| Base 9 | 1119 | 1219 |
| Base 10 | 9110 | 10010 |
| Base 11 | 8311 | 9111 |
| Base 12 | 7712 | 8412 |
| Base 13 | 7013 | 7913 |
| Base 14 | 6714 | 7214 |
| Base 15 | 6115 | 6a15 |
| Base 16 | 5b16 | 6416 |