Compare 809 vs 997
| Property | 809 | 997 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 8091 | 9971 |
| Prime factorization | 809 | 997 |
| Divisors count | 2 | 2 |
| Divisors | 1, 809 | 1, 997 |
| Number of properties | 7 | 6 |
| Additive primes | 74th | |
| Chen primes | 95th | |
| Good primes | 39th | |
| Isolated primes | 99th | |
| Left-truncatable primes | 54th | |
| Lucky primes | 43rd | |
| Primes | 140th | 168th |
| Pythagorean primes | 68th | 80th |
| Sexy primes (2nd member) | 74th | |
| Sophie germain primes | 35th | |
| Twin primes (1st member) | 31st | |
| Roman numberals | DCCCIX | CMXCVII |
| Base 2 | 11001010012 | 11111001012 |
| Base 3 | 10022223 | 11002213 |
| Base 4 | 302214 | 332114 |
| Base 5 | 112145 | 124425 |
| Base 6 | 34256 | 43416 |
| Base 7 | 22347 | 26237 |
| Base 8 | 14518 | 17458 |
| Base 9 | 10889 | 13279 |
| Base 10 | 80910 | 99710 |
| Base 11 | 67611 | 82711 |
| Base 12 | 57512 | 6b112 |
| Base 13 | 4a313 | 5b913 |
| Base 14 | 41b14 | 51314 |
| Base 15 | 38e15 | 46715 |
| Base 16 | 32916 | 3e516 |