Compare 809 vs 1213
| Property | 809 | 1213 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 8091 | 12131 |
| Prime factorization | 809 | 1213 |
| Divisors count | 2 | 2 |
| Divisors | 1, 809 | 1, 1213 |
| Number of properties | 7 | 7 |
| Additive primes | 74th | 106th |
| Chen primes | 95th | |
| Cousin primes (1st member) | 45th | |
| Emirps | 52nd | |
| Good primes | 39th | 49th |
| Isolated primes | 117th | |
| Primes | 140th | 198th |
| Pythagorean primes | 68th | 97th |
| Sophie germain primes | 35th | |
| Twin primes (1st member) | 31st | |
| Roman numberals | DCCCIX | MCCXIII |
| Base 2 | 11001010012 | 100101111012 |
| Base 3 | 10022223 | 11222213 |
| Base 4 | 302214 | 1023314 |
| Base 5 | 112145 | 143235 |
| Base 6 | 34256 | 53416 |
| Base 7 | 22347 | 33527 |
| Base 8 | 14518 | 22758 |
| Base 9 | 10889 | 15879 |
| Base 10 | 80910 | 121310 |
| Base 11 | 67611 | a0311 |
| Base 12 | 57512 | 85112 |
| Base 13 | 4a313 | 72413 |
| Base 14 | 41b14 | 62914 |
| Base 15 | 38e15 | 55d15 |
| Base 16 | 32916 | 4bd16 |