Compare 521 vs 673
| Property | 521 | 673 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 5211 | 6731 |
| Prime factorization | 521 | 673 |
| Divisors count | 2 | 2 |
| Divisors | 1, 521 | 1, 673 |
| Number of properties | 6 | 9 |
| Chen primes | 70th | |
| Cousin primes (1st member) | 30th | |
| Happy primes | 27th | |
| Isolated primes | 63rd | |
| Left-truncatable primes | 41st | |
| Lucas primes | 8th | |
| Lucky primes | 34th | |
| Primes | 98th | 122nd |
| Proth primes | 15th | |
| Pythagorean primes | 46th | 58th |
| Solinas primes | 39th | |
| Twin primes (1st member) | 25th | |
| Ulam primes | 14th | |
| Roman numberals | DXXI | DCLXXIII |
| Base 2 | 10000010012 | 10101000012 |
| Base 3 | 2010223 | 2202213 |
| Base 4 | 200214 | 222014 |
| Base 5 | 40415 | 101435 |
| Base 6 | 22256 | 30416 |
| Base 7 | 13437 | 16517 |
| Base 8 | 10118 | 12418 |
| Base 9 | 6389 | 8279 |
| Base 10 | 52110 | 67310 |
| Base 11 | 43411 | 56211 |
| Base 12 | 37512 | 48112 |
| Base 13 | 31113 | 3ca13 |
| Base 14 | 29314 | 36114 |
| Base 15 | 24b15 | 2ed15 |
| Base 16 | 20916 | 2a116 |