Compare 997 vs 1523
| Property | 997 | 1523 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 9971 | 15231 |
| Prime factorization | 997 | 1523 |
| Divisors count | 2 | 2 |
| Divisors | 1, 997 | 1, 1523 |
| Number of properties | 6 | 7 |
| Additive primes | 131st | |
| Emirps | 74th | |
| Isolated primes | 99th | 142nd |
| Left-truncatable primes | 54th | 59th |
| Lucky primes | 43rd | |
| Primes | 168th | 241st |
| Pythagorean primes | 80th | |
| Safe primes | 34th | |
| Sexy primes (2nd member) | 74th | |
| Super primes | 53rd | |
| Roman numberals | CMXCVII | MDXXIII |
| Base 2 | 11111001012 | 101111100112 |
| Base 3 | 11002213 | 20021023 |
| Base 4 | 332114 | 1133034 |
| Base 5 | 124425 | 220435 |
| Base 6 | 43416 | 110156 |
| Base 7 | 26237 | 43047 |
| Base 8 | 17458 | 27638 |
| Base 9 | 13279 | 20729 |
| Base 10 | 99710 | 152310 |
| Base 11 | 82711 | 116511 |
| Base 12 | 6b112 | a6b12 |
| Base 13 | 5b913 | 90213 |
| Base 14 | 51314 | 7ab14 |
| Base 15 | 46715 | 6b815 |
| Base 16 | 3e516 | 5f316 |