Compare 63 vs 65
| Property | 63 | 65 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 3 | 2 |
| Prime factorization | 32 × 71 | 51 × 131 |
| Prime factorization | 3 × 3 × 7 | 5 × 13 |
| Divisors count | 6 | 4 |
| Divisors | 1, 3, 7, 9, 21, 63 | 1, 5, 13, 65 |
| Number of properties | 0 | 1 |
| Semiprimes | 23rd | |
| Roman numberals | LXIII | LXV |
| Base 2 | 1111112 | 10000012 |
| Base 3 | 21003 | 21023 |
| Base 4 | 3334 | 10014 |
| Base 5 | 2235 | 2305 |
| Base 6 | 1436 | 1456 |
| Base 7 | 1207 | 1227 |
| Base 8 | 778 | 1018 |
| Base 9 | 709 | 729 |
| Base 10 | 6310 | 6510 |
| Base 11 | 5811 | 5a11 |
| Base 12 | 5312 | 5512 |
| Base 13 | 4b13 | 5013 |
| Base 14 | 4714 | 4914 |
| Base 15 | 4315 | 4515 |
| Base 16 | 3f16 | 4116 |