Compare 809 vs 810
| Property | 809 | 810 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 6 |
| Prime factorization | 8091 | 21 × 34 × 51 |
| Prime factorization | 809 | 2 × 3 × 3 × 3 × 3 × 5 |
| Divisors count | 2 | 20 |
| Divisors | 1, 809 | 1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 135, 162, 270, 405, 810 |
| Number of properties | 7 | 0 |
| 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 | DCCCIX | DCCCX |
| Base 2 | 11001010012 | 11001010102 |
| Base 3 | 10022223 | 10100003 |
| Base 4 | 302214 | 302224 |
| Base 5 | 112145 | 112205 |
| Base 6 | 34256 | 34306 |
| Base 7 | 22347 | 22357 |
| Base 8 | 14518 | 14528 |
| Base 9 | 10889 | 11009 |
| Base 10 | 80910 | 81010 |
| Base 11 | 67611 | 67711 |
| Base 12 | 57512 | 57612 |
| Base 13 | 4a313 | 4a413 |
| Base 14 | 41b14 | 41c14 |
| Base 15 | 38e15 | 39015 |
| Base 16 | 32916 | 32a16 |