Compare 509 vs 809
| Property | 509 | 809 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 5091 | 8091 |
| Prime factorization | 509 | 809 |
| Divisors count | 2 | 2 |
| Divisors | 1, 509 | 1, 809 |
| Number of properties | 9 | 7 |
| Additive primes | 74th | |
| Chen primes | 69th | 95th |
| Good primes | 39th | |
| Isolated primes | 50th | |
| Long primes | 37th | |
| Primes | 97th | 140th |
| Pythagorean primes | 45th | 68th |
| Sexy primes (2nd member) | 47th | |
| Solinas primes | 38th | |
| Sophie germain primes | 26th | 35th |
| Super primes | 25th | |
| Twin primes (1st member) | 31st | |
| Roman numberals | DIX | DCCCIX |
| Base 2 | 1111111012 | 11001010012 |
| Base 3 | 2002123 | 10022223 |
| Base 4 | 133314 | 302214 |
| Base 5 | 40145 | 112145 |
| Base 6 | 22056 | 34256 |
| Base 7 | 13257 | 22347 |
| Base 8 | 7758 | 14518 |
| Base 9 | 6259 | 10889 |
| Base 10 | 50910 | 80910 |
| Base 11 | 42311 | 67611 |
| Base 12 | 36512 | 57512 |
| Base 13 | 30213 | 4a313 |
| Base 14 | 28514 | 41b14 |
| Base 15 | 23e15 | 38e15 |
| Base 16 | 1fd16 | 32916 |