Compare 1663 vs 1699
| Property | 1663 | 1699 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 16631 | 16991 |
| Prime factorization | 1663 | 1699 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1663 | 1, 1699 |
| Number of properties | 11 | 5 |
| Cousin primes (1st member) | 59th | |
| Happy primes | 50th | |
| Harmonic primes | 91st | 93rd |
| Isolated primes | 158th | |
| Long primes | 102nd | |
| Lucky primes | 62nd | |
| Primes | 261st | 266th |
| Prime triplets (1st member) | 43rd | |
| Prime triplets (3rd member) | 44th | |
| Sexy primes (1st member) | 113th | |
| Sexy primes (2nd member) | 112th | 114th |
| Sexy prime triplets (2nd member) | 43rd | |
| Twin primes (2nd member) | 54th | |
| Roman numberals | MDCLXIII | MDCXCIX |
| Base 2 | 110011111112 | 110101000112 |
| Base 3 | 20211213 | 20222213 |
| Base 4 | 1213334 | 1222034 |
| Base 5 | 231235 | 232445 |
| Base 6 | 114116 | 115116 |
| Base 7 | 45647 | 46457 |
| Base 8 | 31778 | 32438 |
| Base 9 | 22479 | 22879 |
| Base 10 | 166310 | 169910 |
| Base 11 | 128211 | 130511 |
| Base 12 | b6712 | b9712 |
| Base 13 | 9ac13 | a0913 |
| Base 14 | 86b14 | 89514 |
| Base 15 | 75d15 | 78415 |
| Base 16 | 67f16 | 6a316 |