Compare 521 vs 617
| Property | 521 | 617 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 5211 | 6171 |
| Prime factorization | 521 | 617 |
| Divisors count | 2 | 2 |
| Divisors | 1, 521 | 1, 617 |
| Number of properties | 6 | 9 |
| Chen primes | 70th | 79th |
| Cousin primes (2nd member) | 28th | |
| Happy primes | 25th | |
| Left-truncatable primes | 37th | |
| Lucas primes | 8th | |
| Primes | 98th | 113th |
| Prime triplets (2nd member) | 23rd | |
| Pythagorean primes | 46th | 54th |
| Solinas primes | 39th | |
| Super primes | 30th | |
| Twin primes (1st member) | 25th | 28th |
| Roman numberals | DXXI | DCXVII |
| Base 2 | 10000010012 | 10011010012 |
| Base 3 | 2010223 | 2112123 |
| Base 4 | 200214 | 212214 |
| Base 5 | 40415 | 44325 |
| Base 6 | 22256 | 25056 |
| Base 7 | 13437 | 15417 |
| Base 8 | 10118 | 11518 |
| Base 9 | 6389 | 7559 |
| Base 10 | 52110 | 61710 |
| Base 11 | 43411 | 51111 |
| Base 12 | 37512 | 43512 |
| Base 13 | 31113 | 38613 |
| Base 14 | 29314 | 32114 |
| Base 15 | 24b15 | 2b215 |
| Base 16 | 20916 | 26916 |