Compare 681 vs 686
| Property | 681 | 686 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 2 |
| Total factors | 2 | 4 |
| Prime factorization | 31 × 2271 | 21 × 73 |
| Prime factorization | 3 × 227 | 2 × 7 × 7 × 7 |
| Divisors count | 4 | 8 |
| Divisors | 1, 3, 227, 681 | 1, 2, 7, 14, 49, 98, 343, 686 |
| Number of properties | 1 | 0 |
| Semiprimes | 204th | |
| Roman numberals | DCLXXXI | DCLXXXVI |
| Base 2 | 10101010012 | 10101011102 |
| Base 3 | 2210203 | 2211023 |
| Base 4 | 222214 | 222324 |
| Base 5 | 102115 | 102215 |
| Base 6 | 30536 | 31026 |
| Base 7 | 16627 | 20007 |
| Base 8 | 12518 | 12568 |
| Base 9 | 8369 | 8429 |
| Base 10 | 68110 | 68610 |
| Base 11 | 56a11 | 57411 |
| Base 12 | 48912 | 49212 |
| Base 13 | 40513 | 40a13 |
| Base 14 | 36914 | 37014 |
| Base 15 | 30615 | 30b15 |
| Base 16 | 2a916 | 2ae16 |