Compare 997 vs 1009
| Property | 997 | 1009 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 9971 | 10091 |
| Prime factorization | 997 | 1009 |
| Divisors count | 2 | 2 |
| Divisors | 1, 997 | 1, 1009 |
| Number of properties | 6 | 10 |
| Chen primes | 116th | |
| Cousin primes (1st member) | 42nd | |
| Emirps | 37th | |
| Good primes | 45th | |
| Happy primes | 36th | |
| Isolated primes | 99th | 100th |
| Left-truncatable primes | 54th | |
| Lucky primes | 43rd | 44th |
| Primes | 168th | 169th |
| Pythagorean primes | 80th | 81st |
| Sexy primes (2nd member) | 74th | |
| Solinas primes | 44th | |
| Roman numberals | CMXCVII | MIX |
| Base 2 | 11111001012 | 11111100012 |
| Base 3 | 11002213 | 11011013 |
| Base 4 | 332114 | 333014 |
| Base 5 | 124425 | 130145 |
| Base 6 | 43416 | 44016 |
| Base 7 | 26237 | 26417 |
| Base 8 | 17458 | 17618 |
| Base 9 | 13279 | 13419 |
| Base 10 | 99710 | 100910 |
| Base 11 | 82711 | 83811 |
| Base 12 | 6b112 | 70112 |
| Base 13 | 5b913 | 5c813 |
| Base 14 | 51314 | 52114 |
| Base 15 | 46715 | 47415 |
| Base 16 | 3e516 | 3f116 |