Compare 640009 vs 641261
| Property | 640009 | 641261 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6400091 | 6412611 |
| Prime factorization | 640009 | 641261 |
| Divisors count | 2 | 2 |
| Divisors | 1, 640009 | 1, 641261 |
| Number of properties | 6 | 3 |
| Additive primes | 20351st | |
| Chen primes | 20378th | |
| Happy primes | 7413th | 7425th |
| Isolated primes | 40891st | |
| Lucky primes | 5978th | |
| Primes | 52076th | 52168th |
| Twin primes (2nd member) | 5632nd | |
| Roman numberals | ||
| Base 2 | 100111000100000010012 | 100111001000111011012 |
| Base 3 | 10121112210013 | 10121201221023 |
| Base 4 | 21301000214 | 21302032314 |
| Base 5 | 1304400145 | 1310100215 |
| Base 6 | 214150016 | 214244456 |
| Base 7 | 53036267 | 53103657 |
| Base 8 | 23420118 | 23443558 |
| Base 9 | 11748319 | 11765729 |
| Base 10 | 64000910 | 64126110 |
| Base 11 | 3a793711 | 3a887511 |
| Base 12 | 26a46112 | 26b12512 |
| Base 13 | 19540613 | 195b5a13 |
| Base 14 | 12934d14 | 1299a514 |
| Base 15 | c997415 | ca00b15 |
| Base 16 | 9c40916 | 9c8ed16 |