Compare 861 vs 866
| Property | 861 | 866 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 2 |
| Total factors | 3 | 2 |
| Prime factorization | 31 × 71 × 411 | 21 × 4331 |
| Prime factorization | 3 × 7 × 41 | 2 × 433 |
| Divisors count | 8 | 4 |
| Divisors | 1, 3, 7, 21, 41, 123, 287, 861 | 1, 2, 433, 866 |
| Number of properties | 0 | 1 |
| Semiprimes | 260th | |
| Roman numberals | DCCCLXI | DCCCLXVI |
| Base 2 | 11010111012 | 11011000102 |
| Base 3 | 10112203 | 10120023 |
| Base 4 | 311314 | 312024 |
| Base 5 | 114215 | 114315 |
| Base 6 | 35536 | 40026 |
| Base 7 | 23407 | 23457 |
| Base 8 | 15358 | 15428 |
| Base 9 | 11569 | 11629 |
| Base 10 | 86110 | 86610 |
| Base 11 | 71311 | 71811 |
| Base 12 | 5b912 | 60212 |
| Base 13 | 51313 | 51813 |
| Base 14 | 45714 | 45c14 |
| Base 15 | 3c615 | 3cb15 |
| Base 16 | 35d16 | 36216 |