Compare 1553 vs 1663
| Property | 1553 | 1663 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 15531 | 16631 |
| Prime factorization | 1553 | 1663 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1553 | 1, 1663 |
| Number of properties | 8 | 11 |
| Chen primes | 156th | |
| Cousin primes (1st member) | 59th | |
| Cousin primes (2nd member) | 54th | |
| Happy primes | 50th | |
| Harmonic primes | 91st | |
| Isolated primes | 146th | 158th |
| Long primes | 94th | 102nd |
| Lucky primes | 62nd | |
| Primes | 245th | 261st |
| Prime triplets (1st member) | 43rd | |
| Pythagorean primes | 118th | |
| Sexy primes (1st member) | 107th | 113th |
| Sexy primes (2nd member) | 112th | |
| Sexy prime triplets (2nd member) | 43rd | |
| Ulam primes | 23rd | |
| Roman numberals | MDLIII | MDCLXIII |
| Base 2 | 110000100012 | 110011111112 |
| Base 3 | 20101123 | 20211213 |
| Base 4 | 1201014 | 1213334 |
| Base 5 | 222035 | 231235 |
| Base 6 | 111056 | 114116 |
| Base 7 | 43467 | 45647 |
| Base 8 | 30218 | 31778 |
| Base 9 | 21159 | 22479 |
| Base 10 | 155310 | 166310 |
| Base 11 | 119211 | 128211 |
| Base 12 | a9512 | b6712 |
| Base 13 | 92613 | 9ac13 |
| Base 14 | 7cd14 | 86b14 |
| Base 15 | 6d815 | 75d15 |
| Base 16 | 61116 | 67f16 |