Compare 669 vs 677
| Property | 669 | 677 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 31 × 2231 | 6771 |
| Prime factorization | 3 × 223 | 677 |
| Divisors count | 4 | 2 |
| Divisors | 1, 3, 223, 669 | 1, 677 |
| Number of properties | 1 | 6 |
| Chen primes | 85th | |
| Cousin primes (2nd member) | 30th | |
| Isolated primes | 64th | |
| Primes | 123rd | |
| Pythagorean primes | 59th | |
| Semiprimes | 200th | |
| Sexy primes (1st member) | 60th | |
| Roman numberals | DCLXIX | DCLXXVII |
| Base 2 | 10100111012 | 10101001012 |
| Base 3 | 2202103 | 2210023 |
| Base 4 | 221314 | 222114 |
| Base 5 | 101345 | 102025 |
| Base 6 | 30336 | 30456 |
| Base 7 | 16447 | 16557 |
| Base 8 | 12358 | 12458 |
| Base 9 | 8239 | 8329 |
| Base 10 | 66910 | 67710 |
| Base 11 | 55911 | 56611 |
| Base 12 | 47912 | 48512 |
| Base 13 | 3c613 | 40113 |
| Base 14 | 35b14 | 36514 |
| Base 15 | 2e915 | 30215 |
| Base 16 | 29d16 | 2a516 |