Compare 805 vs 809
| Property | 805 | 809 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 51 × 71 × 231 | 8091 |
| Prime factorization | 5 × 7 × 23 | 809 |
| Divisors count | 8 | 2 |
| Divisors | 1, 5, 7, 23, 35, 115, 161, 805 | 1, 809 |
| Number of properties | 0 | 7 |
| Additive primes | 74th | |
| Chen primes | 95th | |
| Good primes | 39th | |
| Primes | 140th | |
| Pythagorean primes | 68th | |
| Sophie germain primes | 35th | |
| Twin primes (1st member) | 31st | |
| Roman numberals | DCCCV | DCCCIX |
| Base 2 | 11001001012 | 11001010012 |
| Base 3 | 10022113 | 10022223 |
| Base 4 | 302114 | 302214 |
| Base 5 | 112105 | 112145 |
| Base 6 | 34216 | 34256 |
| Base 7 | 22307 | 22347 |
| Base 8 | 14458 | 14518 |
| Base 9 | 10849 | 10889 |
| Base 10 | 80510 | 80910 |
| Base 11 | 67211 | 67611 |
| Base 12 | 57112 | 57512 |
| Base 13 | 49c13 | 4a313 |
| Base 14 | 41714 | 41b14 |
| Base 15 | 38a15 | 38e15 |
| Base 16 | 32516 | 32916 |