Compare 81 vs 84
| Property | 81 | 84 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 1 | 3 |
| Total factors | 4 | 4 |
| Prime factorization | 34 | 22 × 31 × 71 |
| Prime factorization | 3 × 3 × 3 × 3 | 2 × 2 × 3 × 7 |
| Divisors count | 5 | 12 |
| Divisors | 1, 3, 9, 27, 81 | 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84 |
| Number of properties | 0 | 0 |
| Roman numberals | LXXXI | LXXXIV |
| Base 2 | 10100012 | 10101002 |
| Base 3 | 100003 | 100103 |
| Base 4 | 11014 | 11104 |
| Base 5 | 3115 | 3145 |
| Base 6 | 2136 | 2206 |
| Base 7 | 1447 | 1507 |
| Base 8 | 1218 | 1248 |
| Base 9 | 1009 | 1039 |
| Base 10 | 8110 | 8410 |
| Base 11 | 7411 | 7711 |
| Base 12 | 6912 | 7012 |
| Base 13 | 6313 | 6613 |
| Base 14 | 5b14 | 6014 |
| Base 15 | 5615 | 5915 |
| Base 16 | 5116 | 5416 |