Compare 809 vs 1009
| Property | 809 | 1009 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 8091 | 10091 |
| Prime factorization | 809 | 1009 |
| Divisors count | 2 | 2 |
| Divisors | 1, 809 | 1, 1009 |
| Number of properties | 7 | 10 |
| Additive primes | 74th | |
| Chen primes | 95th | 116th |
| Cousin primes (1st member) | 42nd | |
| Emirps | 37th | |
| Good primes | 39th | 45th |
| Happy primes | 36th | |
| Isolated primes | 100th | |
| Lucky primes | 44th | |
| Primes | 140th | 169th |
| Pythagorean primes | 68th | 81st |
| Solinas primes | 44th | |
| Sophie germain primes | 35th | |
| Twin primes (1st member) | 31st | |
| Roman numberals | DCCCIX | MIX |
| Base 2 | 11001010012 | 11111100012 |
| Base 3 | 10022223 | 11011013 |
| Base 4 | 302214 | 333014 |
| Base 5 | 112145 | 130145 |
| Base 6 | 34256 | 44016 |
| Base 7 | 22347 | 26417 |
| Base 8 | 14518 | 17618 |
| Base 9 | 10889 | 13419 |
| Base 10 | 80910 | 100910 |
| Base 11 | 67611 | 83811 |
| Base 12 | 57512 | 70112 |
| Base 13 | 4a313 | 5c813 |
| Base 14 | 41b14 | 52114 |
| Base 15 | 38e15 | 47415 |
| Base 16 | 32916 | 3f116 |