Compare 667 vs 677
| Property | 667 | 677 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 231 × 291 | 6771 |
| Prime factorization | 23 × 29 | 677 |
| Divisors count | 4 | 2 |
| Divisors | 1, 23, 29, 667 | 1, 677 |
| Number of properties | 1 | 6 |
| Chen primes | 85th | |
| Cousin primes (2nd member) | 30th | |
| Isolated primes | 64th | |
| Primes | 123rd | |
| Pythagorean primes | 59th | |
| Semiprimes | 199th | |
| Sexy primes (1st member) | 60th | |
| Roman numberals | DCLXVII | DCLXXVII |
| Base 2 | 10100110112 | 10101001012 |
| Base 3 | 2202013 | 2210023 |
| Base 4 | 221234 | 222114 |
| Base 5 | 101325 | 102025 |
| Base 6 | 30316 | 30456 |
| Base 7 | 16427 | 16557 |
| Base 8 | 12338 | 12458 |
| Base 9 | 8219 | 8329 |
| Base 10 | 66710 | 67710 |
| Base 11 | 55711 | 56611 |
| Base 12 | 47712 | 48512 |
| Base 13 | 3c413 | 40113 |
| Base 14 | 35914 | 36514 |
| Base 15 | 2e715 | 30215 |
| Base 16 | 29b16 | 2a516 |