Compare 78 vs 87
| Property | 78 | 87 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 3 | 2 |
| Prime factorization | 21 × 31 × 131 | 31 × 291 |
| Prime factorization | 2 × 3 × 13 | 3 × 29 |
| Divisors count | 8 | 4 |
| Divisors | 1, 2, 3, 6, 13, 26, 39, 78 | 1, 3, 29, 87 |
| Number of properties | 0 | 1 |
| Semiprimes | 30th | |
| Roman numberals | LXXVIII | LXXXVII |
| Base 2 | 10011102 | 10101112 |
| Base 3 | 22203 | 100203 |
| Base 4 | 10324 | 11134 |
| Base 5 | 3035 | 3225 |
| Base 6 | 2106 | 2236 |
| Base 7 | 1417 | 1537 |
| Base 8 | 1168 | 1278 |
| Base 9 | 869 | 1069 |
| Base 10 | 7810 | 8710 |
| Base 11 | 7111 | 7a11 |
| Base 12 | 6612 | 7312 |
| Base 13 | 6013 | 6913 |
| Base 14 | 5814 | 6314 |
| Base 15 | 5315 | 5c15 |
| Base 16 | 4e16 | 5716 |