Compare 6 vs 9
| Property | 6 | 9 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 2 |
| Prime factorization | 21 × 31 | 32 |
| Prime factorization | 2 × 3 | 3 × 3 |
| Divisors count | 4 | 3 |
| Divisors | 1, 2, 3, 6 | 1, 3, 9 |
| Number of properties | 1 | 1 |
| Semiprimes | 2nd | 3rd |
| Roman numberals | VI | IX |
| Base 2 | 1102 | 10012 |
| Base 3 | 203 | 1003 |
| Base 4 | 124 | 214 |
| Base 5 | 115 | 145 |
| Base 6 | 106 | 136 |
| Base 7 | 67 | 127 |
| Base 8 | 68 | 118 |
| Base 9 | 69 | 109 |
| Base 10 | 610 | 910 |
| Base 11 | 611 | 911 |
| Base 12 | 612 | 912 |
| Base 13 | 613 | 913 |
| Base 14 | 614 | 914 |
| Base 15 | 615 | 915 |
| Base 16 | 616 | 916 |