Compare 75 vs 81
| Property | 75 | 81 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 2 | 1 |
| Total factors | 3 | 4 |
| Prime factorization | 31 × 52 | 34 |
| Prime factorization | 3 × 5 × 5 | 3 × 3 × 3 × 3 |
| Divisors count | 6 | 5 |
| Divisors | 1, 3, 5, 15, 25, 75 | 1, 3, 9, 27, 81 |
| Number of properties | 0 | 0 |
| Roman numberals | LXXV | LXXXI |
| Base 2 | 10010112 | 10100012 |
| Base 3 | 22103 | 100003 |
| Base 4 | 10234 | 11014 |
| Base 5 | 3005 | 3115 |
| Base 6 | 2036 | 2136 |
| Base 7 | 1357 | 1447 |
| Base 8 | 1138 | 1218 |
| Base 9 | 839 | 1009 |
| Base 10 | 7510 | 8110 |
| Base 11 | 6911 | 7411 |
| Base 12 | 6312 | 6912 |
| Base 13 | 5a13 | 6313 |
| Base 14 | 5514 | 5b14 |
| Base 15 | 5015 | 5615 |
| Base 16 | 4b16 | 5116 |