Compare 631 vs 997
| Property | 631 | 997 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6311 | 9971 |
| Prime factorization | 631 | 997 |
| Divisors count | 2 | 2 |
| Divisors | 1, 631 | 1, 997 |
| Number of properties | 6 | 6 |
| Centered triangular primes | 7th | |
| Chen primes | 80th | |
| Cuban primes 1 | 10th | |
| Isolated primes | 60th | 99th |
| Left-truncatable primes | 54th | |
| Lucky primes | 32nd | 43rd |
| Primes | 115th | 168th |
| Pythagorean primes | 80th | |
| Sexy primes (2nd member) | 74th | |
| Roman numberals | DCXXXI | CMXCVII |
| Base 2 | 10011101112 | 11111001012 |
| Base 3 | 2121013 | 11002213 |
| Base 4 | 213134 | 332114 |
| Base 5 | 100115 | 124425 |
| Base 6 | 25316 | 43416 |
| Base 7 | 15617 | 26237 |
| Base 8 | 11678 | 17458 |
| Base 9 | 7719 | 13279 |
| Base 10 | 63110 | 99710 |
| Base 11 | 52411 | 82711 |
| Base 12 | 44712 | 6b112 |
| Base 13 | 39713 | 5b913 |
| Base 14 | 33114 | 51314 |
| Base 15 | 2c115 | 46715 |
| Base 16 | 27716 | 3e516 |