Compare 72 vs 81
| Property | 72 | 81 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 2 | 1 |
| Total factors | 5 | 4 |
| Prime factorization | 23 × 32 | 34 |
| Prime factorization | 2 × 2 × 2 × 3 × 3 | 3 × 3 × 3 × 3 |
| Divisors count | 12 | 5 |
| Divisors | 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72 | 1, 3, 9, 27, 81 |
| Number of properties | 0 | 0 |
| Roman numberals | LXXII | LXXXI |
| Base 2 | 10010002 | 10100012 |
| Base 3 | 22003 | 100003 |
| Base 4 | 10204 | 11014 |
| Base 5 | 2425 | 3115 |
| Base 6 | 2006 | 2136 |
| Base 7 | 1327 | 1447 |
| Base 8 | 1108 | 1218 |
| Base 9 | 809 | 1009 |
| Base 10 | 7210 | 8110 |
| Base 11 | 6611 | 7411 |
| Base 12 | 6012 | 6912 |
| Base 13 | 5713 | 6313 |
| Base 14 | 5214 | 5b14 |
| Base 15 | 4c15 | 5615 |
| Base 16 | 4816 | 5116 |