Compare 617 vs 661
| Property | 617 | 661 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6171 | 6611 |
| Prime factorization | 617 | 661 |
| Divisors count | 2 | 2 |
| Divisors | 1, 617 | 1, 661 |
| Number of properties | 9 | 5 |
| Additive primes | 65th | |
| Centered decagonal primes | 8th | |
| Chen primes | 79th | |
| Cousin primes (2nd member) | 28th | |
| Happy primes | 25th | |
| Left-truncatable primes | 37th | |
| Primes | 113th | 121st |
| Prime triplets (2nd member) | 23rd | |
| Pythagorean primes | 54th | 57th |
| Super primes | 30th | |
| Twin primes (1st member) | 28th | |
| Twin primes (2nd member) | 30th | |
| Roman numberals | DCXVII | DCLXI |
| Base 2 | 10011010012 | 10100101012 |
| Base 3 | 2112123 | 2201113 |
| Base 4 | 212214 | 221114 |
| Base 5 | 44325 | 101215 |
| Base 6 | 25056 | 30216 |
| Base 7 | 15417 | 16337 |
| Base 8 | 11518 | 12258 |
| Base 9 | 7559 | 8149 |
| Base 10 | 61710 | 66110 |
| Base 11 | 51111 | 55111 |
| Base 12 | 43512 | 47112 |
| Base 13 | 38613 | 3bb13 |
| Base 14 | 32114 | 35314 |
| Base 15 | 2b215 | 2e115 |
| Base 16 | 26916 | 29516 |