Compare 509 vs 515
| Property | 509 | 515 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 5091 | 51 × 1031 |
| Prime factorization | 509 | 5 × 103 |
| Divisors count | 2 | 4 |
| Divisors | 1, 509 | 1, 5, 103, 515 |
| Number of properties | 9 | 1 |
| Chen primes | 69th | |
| Isolated primes | 50th | |
| Long primes | 37th | |
| Primes | 97th | |
| Pythagorean primes | 45th | |
| Semiprimes | 159th | |
| Sexy primes (2nd member) | 47th | |
| Solinas primes | 38th | |
| Sophie germain primes | 26th | |
| Super primes | 25th | |
| Roman numberals | DIX | DXV |
| Base 2 | 1111111012 | 10000000112 |
| Base 3 | 2002123 | 2010023 |
| Base 4 | 133314 | 200034 |
| Base 5 | 40145 | 40305 |
| Base 6 | 22056 | 22156 |
| Base 7 | 13257 | 13347 |
| Base 8 | 7758 | 10038 |
| Base 9 | 6259 | 6329 |
| Base 10 | 50910 | 51510 |
| Base 11 | 42311 | 42911 |
| Base 12 | 36512 | 36b12 |
| Base 13 | 30213 | 30813 |
| Base 14 | 28514 | 28b14 |
| Base 15 | 23e15 | 24515 |
| Base 16 | 1fd16 | 20316 |