Compare 678 vs 681
| Property | 678 | 681 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 3 | 2 |
| Prime factorization | 21 × 31 × 1131 | 31 × 2271 |
| Prime factorization | 2 × 3 × 113 | 3 × 227 |
| Divisors count | 8 | 4 |
| Divisors | 1, 2, 3, 6, 113, 226, 339, 678 | 1, 3, 227, 681 |
| Number of properties | 0 | 1 |
| Semiprimes | 204th | |
| Roman numberals | DCLXXVIII | DCLXXXI |
| Base 2 | 10101001102 | 10101010012 |
| Base 3 | 2210103 | 2210203 |
| Base 4 | 222124 | 222214 |
| Base 5 | 102035 | 102115 |
| Base 6 | 30506 | 30536 |
| Base 7 | 16567 | 16627 |
| Base 8 | 12468 | 12518 |
| Base 9 | 8339 | 8369 |
| Base 10 | 67810 | 68110 |
| Base 11 | 56711 | 56a11 |
| Base 12 | 48612 | 48912 |
| Base 13 | 40213 | 40513 |
| Base 14 | 36614 | 36914 |
| Base 15 | 30315 | 30615 |
| Base 16 | 2a616 | 2a916 |