Compare 64 vs 65
| Property | 64 | 65 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 6 | 2 |
| Prime factorization | 26 | 51 × 131 |
| Prime factorization | 2 × 2 × 2 × 2 × 2 × 2 | 5 × 13 |
| Divisors count | 7 | 4 |
| Divisors | 1, 2, 4, 8, 16, 32, 64 | 1, 5, 13, 65 |
| Number of properties | 0 | 1 |
| Semiprimes | 23rd | |
| Roman numberals | LXIV | LXV |
| Base 2 | 10000002 | 10000012 |
| Base 3 | 21013 | 21023 |
| Base 4 | 10004 | 10014 |
| Base 5 | 2245 | 2305 |
| Base 6 | 1446 | 1456 |
| Base 7 | 1217 | 1227 |
| Base 8 | 1008 | 1018 |
| Base 9 | 719 | 729 |
| Base 10 | 6410 | 6510 |
| Base 11 | 5911 | 5a11 |
| Base 12 | 5412 | 5512 |
| Base 13 | 4c13 | 5013 |
| Base 14 | 4814 | 4914 |
| Base 15 | 4415 | 4515 |
| Base 16 | 4016 | 4116 |