Compare 997 vs 1001
| Property | 997 | 1001 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 9971 | 71 × 111 × 131 |
| Prime factorization | 997 | 7 × 11 × 13 |
| Divisors count | 2 | 8 |
| Divisors | 1, 997 | 1, 7, 11, 13, 77, 91, 143, 1001 |
| 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 | MI |
| Base 2 | 11111001012 | 11111010012 |
| Base 3 | 11002213 | 11010023 |
| Base 4 | 332114 | 332214 |
| Base 5 | 124425 | 130015 |
| Base 6 | 43416 | 43456 |
| Base 7 | 26237 | 26307 |
| Base 8 | 17458 | 17518 |
| Base 9 | 13279 | 13329 |
| Base 10 | 99710 | 100110 |
| Base 11 | 82711 | 83011 |
| Base 12 | 6b112 | 6b512 |
| Base 13 | 5b913 | 5c013 |
| Base 14 | 51314 | 51714 |
| Base 15 | 46715 | 46b15 |
| Base 16 | 3e516 | 3e916 |