Compare 1667 vs 1997
| Property | 1667 | 1997 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 16671 | 19971 |
| Prime factorization | 1667 | 1997 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1667 | 1, 1997 |
| Number of properties | 6 | 10 |
| Chen primes | 165th | 185th |
| Cousin primes (2nd member) | 59th | 64th |
| Good primes | 64th | |
| Harmonic primes | 92nd | |
| Left-truncatable primes | 62nd | |
| Primes | 262nd | 302nd |
| Prime triplets (1st member) | 50th | |
| Prime triplets (2nd member) | 43rd | 49th |
| Pythagorean primes | 147th | |
| Sexy primes (1st member) | 129th | |
| Twin primes (1st member) | 53rd | 61st |
| Roman numberals | MDCLXVII | MCMXCVII |
| Base 2 | 110100000112 | 111110011012 |
| Base 3 | 20212023 | 22012223 |
| Base 4 | 1220034 | 1330314 |
| Base 5 | 231325 | 304425 |
| Base 6 | 114156 | 131256 |
| Base 7 | 46017 | 55527 |
| Base 8 | 32038 | 37158 |
| Base 9 | 22529 | 26589 |
| Base 10 | 166710 | 199710 |
| Base 11 | 128611 | 155611 |
| Base 12 | b6b12 | 11a512 |
| Base 13 | 9b313 | ba813 |
| Base 14 | 87114 | a2914 |
| Base 15 | 76215 | 8d215 |
| Base 16 | 68316 | 7cd16 |