Compare 659 vs 666
| Property | 659 | 666 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 4 |
| Prime factorization | 6591 | 21 × 32 × 371 |
| Prime factorization | 659 | 2 × 3 × 3 × 37 |
| Divisors count | 2 | 12 |
| Divisors | 1, 659 | 1, 2, 3, 6, 9, 18, 37, 74, 111, 222, 333, 666 |
| Number of properties | 8 | 0 |
| Chen primes | 84th | |
| Long primes | 44th | |
| Primes | 120th | |
| Sexy primes (2nd member) | 59th | |
| Sexy prime quadrupletss (4th member) | 7th | |
| Sexy prime triplets (3rd member) | 25th | |
| Sophie germain primes | 30th | |
| Twin primes (1st member) | 30th | |
| Roman numberals | DCLIX | DCLXVI |
| Base 2 | 10100100112 | 10100110102 |
| Base 3 | 2201023 | 2202003 |
| Base 4 | 221034 | 221224 |
| Base 5 | 101145 | 101315 |
| Base 6 | 30156 | 30306 |
| Base 7 | 16317 | 16417 |
| Base 8 | 12238 | 12328 |
| Base 9 | 8129 | 8209 |
| Base 10 | 65910 | 66610 |
| Base 11 | 54a11 | 55611 |
| Base 12 | 46b12 | 47612 |
| Base 13 | 3b913 | 3c313 |
| Base 14 | 35114 | 35814 |
| Base 15 | 2de15 | 2e615 |
| Base 16 | 29316 | 29a16 |