Compare 1663 vs 1867
| Property | 1663 | 1867 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 16631 | 18671 |
| Prime factorization | 1663 | 1867 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1663 | 1, 1867 |
| Number of properties | 11 | 12 |
| Cousin primes (1st member) | 59th | 62nd |
| Emirps | 90th | |
| Good primes | 59th | |
| Happy primes | 50th | |
| Harmonic primes | 91st | |
| Isolated primes | 158th | 174th |
| Long primes | 102nd | |
| Lucky primes | 62nd | |
| Primes | 261st | 285th |
| Prime quintuplet 1s (1st member) | 3rd | |
| Prime triplets (1st member) | 43rd | 46th |
| Sexy primes (1st member) | 113th | 121st |
| Sexy primes (2nd member) | 112th | 120th |
| Sexy prime quadrupletss (2nd member) | 12th | |
| Sexy prime triplets (1st member) | 48th | |
| Sexy prime triplets (2nd member) | 43rd | 47th |
| Roman numberals | MDCLXIII | MDCCCLXVII |
| Base 2 | 110011111112 | 111010010112 |
| Base 3 | 20211213 | 21200113 |
| Base 4 | 1213334 | 1310234 |
| Base 5 | 231235 | 244325 |
| Base 6 | 114116 | 123516 |
| Base 7 | 45647 | 53057 |
| Base 8 | 31778 | 35138 |
| Base 9 | 22479 | 25049 |
| Base 10 | 166310 | 186710 |
| Base 11 | 128211 | 144811 |
| Base 12 | b6712 | 10b712 |
| Base 13 | 9ac13 | b0813 |
| Base 14 | 86b14 | 97514 |
| Base 15 | 75d15 | 84715 |
| Base 16 | 67f16 | 74b16 |