Compare 640061 vs 640063
| Property | 640061 | 640063 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 6400611 | 371 × 172991 |
| Prime factorization | 640061 | 37 × 17299 |
| Divisors count | 2 | 4 |
| Divisors | 1, 640061 | 1, 37, 17299, 640063 |
| Number of properties | 4 | 1 |
| Additive primes | 20355th | |
| Chen primes | 20380th | |
| Isolated primes | 40819th | |
| Primes | 52082nd | |
| Semiprimes | 137155th | |
| Roman numberals | ||
| Base 2 | 100111000100001111012 | 100111000100001111112 |
| Base 3 | 10121112222223 | 10121120000013 |
| Base 4 | 21301003314 | 21301003334 |
| Base 5 | 1304402215 | 1304402235 |
| Base 6 | 214151256 | 214151316 |
| Base 7 | 53040327 | 53040347 |
| Base 8 | 23420758 | 23420778 |
| Base 9 | 11748889 | 11750019 |
| Base 10 | 64006110 | 64006310 |
| Base 11 | 3a798411 | 3a798611 |
| Base 12 | 26a4a512 | 26a4a712 |
| Base 13 | 19544613 | 19544813 |
| Base 14 | 12938914 | 12938b14 |
| Base 15 | c99ab15 | c99ad15 |
| Base 16 | 9c43d16 | 9c43f16 |