Compare 1609 vs 1667
| Property | 1609 | 1667 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 16091 | 16671 |
| Prime factorization | 1609 | 1667 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1609 | 1, 1667 |
| Number of properties | 6 | 6 |
| Chen primes | 165th | |
| Cousin primes (1st member) | 58th | |
| Cousin primes (2nd member) | 59th | |
| Harmonic primes | 87th | 92nd |
| Primes | 254th | 262nd |
| Prime triplets (2nd member) | 42nd | 43rd |
| Pythagorean primes | 121st | |
| Twin primes (1st member) | 53rd | |
| Twin primes (2nd member) | 51st | |
| Roman numberals | MDCIX | MDCLXVII |
| Base 2 | 110010010012 | 110100000112 |
| Base 3 | 20121213 | 20212023 |
| Base 4 | 1210214 | 1220034 |
| Base 5 | 224145 | 231325 |
| Base 6 | 112416 | 114156 |
| Base 7 | 44567 | 46017 |
| Base 8 | 31118 | 32038 |
| Base 9 | 21779 | 22529 |
| Base 10 | 160910 | 166710 |
| Base 11 | 123311 | 128611 |
| Base 12 | b2112 | b6b12 |
| Base 13 | 96a13 | 9b313 |
| Base 14 | 82d14 | 87114 |
| Base 15 | 72415 | 76215 |
| Base 16 | 64916 | 68316 |