Compare 1663 vs 1933
| Property | 1663 | 1933 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 16631 | 19331 |
| Prime factorization | 1663 | 1933 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1663 | 1, 1933 |
| Number of properties | 11 | 8 |
| Centered heptagonal primes | 8th | |
| Cousin primes (1st member) | 59th | |
| Emirps | 94th | |
| Happy primes | 50th | 54th |
| Harmonic primes | 91st | 109th |
| Isolated primes | 158th | |
| Long primes | 102nd | |
| Lucky primes | 62nd | 69th |
| Primes | 261st | 295th |
| Prime triplets (1st member) | 43rd | |
| Pythagorean primes | 143rd | |
| Sexy primes (1st member) | 113th | |
| Sexy primes (2nd member) | 112th | |
| Sexy prime triplets (2nd member) | 43rd | |
| Twin primes (2nd member) | 59th | |
| Roman numberals | MDCLXIII | MCMXXXIII |
| Base 2 | 110011111112 | 111100011012 |
| Base 3 | 20211213 | 21221213 |
| Base 4 | 1213334 | 1320314 |
| Base 5 | 231235 | 302135 |
| Base 6 | 114116 | 125416 |
| Base 7 | 45647 | 54317 |
| Base 8 | 31778 | 36158 |
| Base 9 | 22479 | 25779 |
| Base 10 | 166310 | 193310 |
| Base 11 | 128211 | 14a811 |
| Base 12 | b6712 | 115112 |
| Base 13 | 9ac13 | b5913 |
| Base 14 | 86b14 | 9c114 |
| Base 15 | 75d15 | 88d15 |
| Base 16 | 67f16 | 78d16 |