Compare 640208 vs 640217
| Property | 640208 | 640217 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 2 | 2 |
| Total factors | 5 | 2 |
| Prime factorization | 24 × 400131 | 4991 × 12831 |
| Prime factorization | 2 × 2 × 2 × 2 × 40013 | 499 × 1283 |
| Divisors count | 10 | 4 |
| Divisors | 1, 2, 4, 8, 16, 40013, 80026, 160052, 320104, 640208 | 1, 499, 1283, 640217 |
| Number of properties | 0 | 1 |
| Semiprimes | 137189th | |
| Roman numberals | ||
| Base 2 | 100111000100110100002 | 100111000100110110012 |
| Base 3 | 10121120121023 | 10121120122023 |
| Base 4 | 21301031004 | 21301031214 |
| Base 5 | 1304413135 | 1304413325 |
| Base 6 | 214155326 | 214155456 |
| Base 7 | 53043327 | 53043447 |
| Base 8 | 23423208 | 23423318 |
| Base 9 | 11751729 | 11751829 |
| Base 10 | 64020810 | 64021710 |
| Base 11 | 3a7aa811 | 3a800611 |
| Base 12 | 26a5a812 | 26a5b512 |
| Base 13 | 19552a13 | 19553613 |
| Base 14 | 12945214 | 12945b14 |
| Base 15 | c9a5815 | c9a6215 |
| Base 16 | 9c4d016 | 9c4d916 |