Compare 639907 vs 640621
| Property | 639907 | 640621 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6399071 | 6406211 |
| Prime factorization | 639907 | 640621 |
| Divisors count | 2 | 2 |
| Divisors | 1, 639907 | 1, 640621 |
| Number of properties | 5 | 4 |
| Additive primes | 20369th | |
| Cousin primes (1st member) | 5630th | |
| Good primes | 1985th | |
| Isolated primes | 40806th | 40848th |
| Primes | 52067th | 52121st |
| Super primes | 5325th | 5329th |
| Roman numberals | ||
| Base 2 | 100111000011101000112 | 100111000110011011012 |
| Base 3 | 10121112100213 | 10121122022013 |
| Base 4 | 21300322034 | 21301212314 |
| Base 5 | 1304341125 | 1304444415 |
| Base 6 | 214143116 | 214215016 |
| Base 7 | 53034227 | 53054627 |
| Base 8 | 23416438 | 23431558 |
| Base 9 | 11747079 | 11756819 |
| Base 10 | 63990710 | 64062110 |
| Base 11 | 3a785411 | 3a834311 |
| Base 12 | 26a39712 | 26a89112 |
| Base 13 | 19535813 | 19578713 |
| Base 14 | 1292b914 | 12966914 |
| Base 15 | c990715 | c9c3115 |
| Base 16 | 9c3a316 | 9c66d16 |