Compare 497 vs 509
| Property | 497 | 509 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 71 × 711 | 5091 |
| Prime factorization | 7 × 71 | 509 |
| Divisors count | 4 | 2 |
| Divisors | 1, 7, 71, 497 | 1, 509 |
| Number of properties | 1 | 9 |
| Chen primes | 69th | |
| Isolated primes | 50th | |
| Long primes | 37th | |
| Primes | 97th | |
| Pythagorean primes | 45th | |
| Semiprimes | 153rd | |
| Sexy primes (2nd member) | 47th | |
| Solinas primes | 38th | |
| Sophie germain primes | 26th | |
| Super primes | 25th | |
| Roman numberals | CDXCVII | DIX |
| Base 2 | 1111100012 | 1111111012 |
| Base 3 | 2001023 | 2002123 |
| Base 4 | 133014 | 133314 |
| Base 5 | 34425 | 40145 |
| Base 6 | 21456 | 22056 |
| Base 7 | 13107 | 13257 |
| Base 8 | 7618 | 7758 |
| Base 9 | 6129 | 6259 |
| Base 10 | 49710 | 50910 |
| Base 11 | 41211 | 42311 |
| Base 12 | 35512 | 36512 |
| Base 13 | 2c313 | 30213 |
| Base 14 | 27714 | 28514 |
| Base 15 | 23215 | 23e15 |
| Base 16 | 1f116 | 1fd16 |