Compare 997 vs 1005
| Property | 997 | 1005 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 9971 | 31 × 51 × 671 |
| Prime factorization | 997 | 3 × 5 × 67 |
| Divisors count | 2 | 8 |
| Divisors | 1, 997 | 1, 3, 5, 15, 67, 201, 335, 1005 |
| Number of properties | 6 | 0 |
| Isolated primes | 99th | |
| Left-truncatable primes | 54th | |
| Lucky primes | 43rd | |
| Primes | 168th | |
| Pythagorean primes | 80th | |
| Sexy primes (2nd member) | 74th | |
| Roman numberals | CMXCVII | MV |
| Base 2 | 11111001012 | 11111011012 |
| Base 3 | 11002213 | 11010203 |
| Base 4 | 332114 | 332314 |
| Base 5 | 124425 | 130105 |
| Base 6 | 43416 | 43536 |
| Base 7 | 26237 | 26347 |
| Base 8 | 17458 | 17558 |
| Base 9 | 13279 | 13369 |
| Base 10 | 99710 | 100510 |
| Base 11 | 82711 | 83411 |
| Base 12 | 6b112 | 6b912 |
| Base 13 | 5b913 | 5c413 |
| Base 14 | 51314 | 51b14 |
| Base 15 | 46715 | 47015 |
| Base 16 | 3e516 | 3ed16 |