Compare 6639 vs 6645
| Property | 6639 | 6645 |
|---|---|---|
| Type | semiprime | composite number |
| Unique factors | 2 | 3 |
| Total factors | 2 | 3 |
| Prime factorization | 31 × 22131 | 31 × 51 × 4431 |
| Prime factorization | 3 × 2213 | 3 × 5 × 443 |
| Divisors count | 4 | 8 |
| Divisors | 1, 3, 2213, 6639 | 1, 3, 5, 15, 443, 1329, 2215, 6645 |
| Number of properties | 1 | 0 |
| Semiprimes | 1786th | |
| Roman numberals | ||
| Base 2 | 11001111011112 | 11001111101012 |
| Base 3 | 1000022203 | 1000100103 |
| Base 4 | 12132334 | 12133114 |
| Base 5 | 2030245 | 2030405 |
| Base 6 | 504236 | 504336 |
| Base 7 | 252337 | 252427 |
| Base 8 | 147578 | 147658 |
| Base 9 | 100869 | 101039 |
| Base 10 | 663910 | 664510 |
| Base 11 | 4a9611 | 4aa111 |
| Base 12 | 3a1312 | 3a1912 |
| Base 13 | 303913 | 304213 |
| Base 14 | 25c314 | 25c914 |
| Base 15 | 1e7915 | 1e8015 |
| Base 16 | 19ef16 | 19f516 |