Compare 65 vs 87
| Property | 65 | 87 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 51 × 131 | 31 × 291 |
| Prime factorization | 5 × 13 | 3 × 29 |
| Divisors count | 4 | 4 |
| Divisors | 1, 5, 13, 65 | 1, 3, 29, 87 |
| Number of properties | 1 | 1 |
| Semiprimes | 23rd | 30th |
| Roman numberals | LXV | LXXXVII |
| Base 2 | 10000012 | 10101112 |
| Base 3 | 21023 | 100203 |
| Base 4 | 10014 | 11134 |
| Base 5 | 2305 | 3225 |
| Base 6 | 1456 | 2236 |
| Base 7 | 1227 | 1537 |
| Base 8 | 1018 | 1278 |
| Base 9 | 729 | 1069 |
| Base 10 | 6510 | 8710 |
| Base 11 | 5a11 | 7a11 |
| Base 12 | 5512 | 7312 |
| Base 13 | 5013 | 6913 |
| Base 14 | 4914 | 6314 |
| Base 15 | 4515 | 5c15 |
| Base 16 | 4116 | 5716 |