Compare 6639 vs 6686
| Property | 6639 | 6686 |
|---|---|---|
| Type | semiprime | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 2 | 2 |
| Prime factorization | 31 × 22131 | 21 × 33431 |
| Prime factorization | 3 × 2213 | 2 × 3343 |
| Divisors count | 4 | 4 |
| Divisors | 1, 3, 2213, 6639 | 1, 2, 3343, 6686 |
| Number of properties | 1 | 1 |
| Semiprimes | 1786th | 1797th |
| Roman numberals | ||
| Base 2 | 11001111011112 | 11010000111102 |
| Base 3 | 1000022203 | 1000111223 |
| Base 4 | 12132334 | 12201324 |
| Base 5 | 2030245 | 2032215 |
| Base 6 | 504236 | 505426 |
| Base 7 | 252337 | 253317 |
| Base 8 | 147578 | 150368 |
| Base 9 | 100869 | 101489 |
| Base 10 | 663910 | 668610 |
| Base 11 | 4a9611 | 502911 |
| Base 12 | 3a1312 | 3a5212 |
| Base 13 | 303913 | 307413 |
| Base 14 | 25c314 | 261814 |
| Base 15 | 1e7915 | 1eab15 |
| Base 16 | 19ef16 | 1a1e16 |