Compare 8 vs 15
| Property | 8 | 15 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 3 | 2 |
| Prime factorization | 23 | 31 × 51 |
| Prime factorization | 2 × 2 × 2 | 3 × 5 |
| Divisors count | 4 | 4 |
| Divisors | 1, 2, 4, 8 | 1, 3, 5, 15 |
| Number of properties | 0 | 1 |
| Semiprimes | 6th | |
| Roman numberals | VIII | XV |
| Base 2 | 10002 | 11112 |
| Base 3 | 223 | 1203 |
| Base 4 | 204 | 334 |
| Base 5 | 135 | 305 |
| Base 6 | 126 | 236 |
| Base 7 | 117 | 217 |
| Base 8 | 108 | 178 |
| Base 9 | 89 | 169 |
| Base 10 | 810 | 1510 |
| Base 11 | 811 | 1411 |
| Base 12 | 812 | 1312 |
| Base 13 | 813 | 1213 |
| Base 14 | 814 | 1114 |
| Base 15 | 815 | 1015 |
| Base 16 | 816 | f16 |