Compare 681 vs 684
| Property | 681 | 684 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 3 |
| Total factors | 2 | 5 |
| Prime factorization | 31 × 2271 | 22 × 32 × 191 |
| Prime factorization | 3 × 227 | 2 × 2 × 3 × 3 × 19 |
| Divisors count | 4 | 18 |
| Divisors | 1, 3, 227, 681 | 1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 171, 228, 342, 684 |
| Number of properties | 1 | 0 |
| Semiprimes | 204th | |
| Roman numberals | DCLXXXI | DCLXXXIV |
| Base 2 | 10101010012 | 10101011002 |
| Base 3 | 2210203 | 2211003 |
| Base 4 | 222214 | 222304 |
| Base 5 | 102115 | 102145 |
| Base 6 | 30536 | 31006 |
| Base 7 | 16627 | 16657 |
| Base 8 | 12518 | 12548 |
| Base 9 | 8369 | 8409 |
| Base 10 | 68110 | 68410 |
| Base 11 | 56a11 | 57211 |
| Base 12 | 48912 | 49012 |
| Base 13 | 40513 | 40813 |
| Base 14 | 36914 | 36c14 |
| Base 15 | 30615 | 30915 |
| Base 16 | 2a916 | 2ac16 |