Compare 667 vs 673
| Property | 667 | 673 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 231 × 291 | 6731 |
| Prime factorization | 23 × 29 | 673 |
| Divisors count | 4 | 2 |
| Divisors | 1, 23, 29, 667 | 1, 673 |
| Number of properties | 1 | 9 |
| Cousin primes (1st member) | 30th | |
| Happy primes | 27th | |
| Isolated primes | 63rd | |
| Left-truncatable primes | 41st | |
| Lucky primes | 34th | |
| Primes | 122nd | |
| Proth primes | 15th | |
| Pythagorean primes | 58th | |
| Semiprimes | 199th | |
| Ulam primes | 14th | |
| Roman numberals | DCLXVII | DCLXXIII |
| Base 2 | 10100110112 | 10101000012 |
| Base 3 | 2202013 | 2202213 |
| Base 4 | 221234 | 222014 |
| Base 5 | 101325 | 101435 |
| Base 6 | 30316 | 30416 |
| Base 7 | 16427 | 16517 |
| Base 8 | 12338 | 12418 |
| Base 9 | 8219 | 8279 |
| Base 10 | 66710 | 67310 |
| Base 11 | 55711 | 56211 |
| Base 12 | 47712 | 48112 |
| Base 13 | 3c413 | 3ca13 |
| Base 14 | 35914 | 36114 |
| Base 15 | 2e715 | 2ed15 |
| Base 16 | 29b16 | 2a116 |