Compare 671 vs 673
| Property | 671 | 673 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 111 × 611 | 6731 |
| Prime factorization | 11 × 61 | 673 |
| Divisors count | 4 | 2 |
| Divisors | 1, 11, 61, 671 | 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 | 201st | |
| Ulam primes | 14th | |
| Roman numberals | DCLXXI | DCLXXIII |
| Base 2 | 10100111112 | 10101000012 |
| Base 3 | 2202123 | 2202213 |
| Base 4 | 221334 | 222014 |
| Base 5 | 101415 | 101435 |
| Base 6 | 30356 | 30416 |
| Base 7 | 16467 | 16517 |
| Base 8 | 12378 | 12418 |
| Base 9 | 8259 | 8279 |
| Base 10 | 67110 | 67310 |
| Base 11 | 56011 | 56211 |
| Base 12 | 47b12 | 48112 |
| Base 13 | 3c813 | 3ca13 |
| Base 14 | 35d14 | 36114 |
| Base 15 | 2eb15 | 2ed15 |
| Base 16 | 29f16 | 2a116 |