Compare 663 vs 673
| Property | 663 | 673 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 1 |
| Prime factorization | 31 × 131 × 171 | 6731 |
| Prime factorization | 3 × 13 × 17 | 673 |
| Divisors count | 8 | 2 |
| Divisors | 1, 3, 13, 17, 39, 51, 221, 663 | 1, 673 |
| Number of properties | 0 | 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 | |
| Ulam primes | 14th | |
| Roman numberals | DCLXIII | DCLXXIII |
| Base 2 | 10100101112 | 10101000012 |
| Base 3 | 2201203 | 2202213 |
| Base 4 | 221134 | 222014 |
| Base 5 | 101235 | 101435 |
| Base 6 | 30236 | 30416 |
| Base 7 | 16357 | 16517 |
| Base 8 | 12278 | 12418 |
| Base 9 | 8169 | 8279 |
| Base 10 | 66310 | 67310 |
| Base 11 | 55311 | 56211 |
| Base 12 | 47312 | 48112 |
| Base 13 | 3c013 | 3ca13 |
| Base 14 | 35514 | 36114 |
| Base 15 | 2e315 | 2ed15 |
| Base 16 | 29716 | 2a116 |