Compare 1669 vs 1680
| Property | 1669 | 1680 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 4 |
| Total factors | 1 | 7 |
| Prime factorization | 16691 | 24 × 31 × 51 × 71 |
| Prime factorization | 1669 | 2 × 2 × 2 × 2 × 3 × 5 × 7 |
| Divisors count | 2 | 40 |
| Divisors | 1, 1669 | 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680 |
| Number of properties | 9 | 0 |
| Chen primes | 166th | |
| Emirps | 81st | |
| Primes | 263rd | |
| Prime triplets (3rd member) | 43rd | |
| Pythagorean primes | 126th | |
| Sexy primes (2nd member) | 113th | |
| Sexy prime triplets (3rd member) | 43rd | |
| Super primes | 56th | |
| Twin primes (2nd member) | 53rd | |
| Roman numberals | MDCLXIX | MDCLXXX |
| Base 2 | 110100001012 | 110100100002 |
| Base 3 | 20212113 | 20220203 |
| Base 4 | 1220114 | 1221004 |
| Base 5 | 231345 | 232105 |
| Base 6 | 114216 | 114406 |
| Base 7 | 46037 | 46207 |
| Base 8 | 32058 | 32208 |
| Base 9 | 22549 | 22669 |
| Base 10 | 166910 | 168010 |
| Base 11 | 128811 | 129811 |
| Base 12 | b7112 | b8012 |
| Base 13 | 9b513 | 9c313 |
| Base 14 | 87314 | 88014 |
| Base 15 | 76415 | 77015 |
| Base 16 | 68516 | 69016 |