Compare 661 vs 733
| Property | 661 | 733 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 6611 | 7331 |
| Prime factorization | 661 | 733 |
| Divisors count | 2 | 2 |
| Divisors | 1, 661 | 1, 733 |
| Number of properties | 5 | 10 |
| Additive primes | 65th | 68th |
| Centered decagonal primes | 8th | |
| Emirps | 23rd | |
| Good primes | 37th | |
| Isolated primes | 71st | |
| Primes | 121st | 130th |
| Pythagorean primes | 57th | 62nd |
| Right-truncatable primes | 25th | |
| Sexy primes (1st member) | 62nd | |
| Sexy primes (2nd member) | 61st | |
| Sexy prime triplets (2nd member) | 26th | |
| Twin primes (2nd member) | 30th | |
| Roman numberals | DCLXI | DCCXXXIII |
| Base 2 | 10100101012 | 10110111012 |
| Base 3 | 2201113 | 10000113 |
| Base 4 | 221114 | 231314 |
| Base 5 | 101215 | 104135 |
| Base 6 | 30216 | 32216 |
| Base 7 | 16337 | 20657 |
| Base 8 | 12258 | 13358 |
| Base 9 | 8149 | 10049 |
| Base 10 | 66110 | 73310 |
| Base 11 | 55111 | 60711 |
| Base 12 | 47112 | 51112 |
| Base 13 | 3bb13 | 44513 |
| Base 14 | 35314 | 3a514 |
| Base 15 | 2e115 | 33d15 |
| Base 16 | 29516 | 2dd16 |