Compare 1559 vs 1621
| Property | 1559 | 1621 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 15591 | 16211 |
| Prime factorization | 1559 | 1621 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1559 | 1, 1621 |
| Number of properties | 6 | 8 |
| Chen primes | 157th | 163rd |
| Emirps | 75th | |
| Harmonic primes | 89th | |
| Isolated primes | 147th | |
| Long primes | 101st | |
| Primes | 246th | 257th |
| Pythagorean primes | 123rd | |
| Sexy primes (1st member) | 111th | |
| Sexy primes (2nd member) | 107th | |
| Sophie germain primes | 52nd | |
| Super primes | 55th | |
| Twin primes (2nd member) | 52nd | |
| Roman numberals | MDLIX | MDCXXI |
| Base 2 | 110000101112 | 110010101012 |
| Base 3 | 20102023 | 20200013 |
| Base 4 | 1201134 | 1211114 |
| Base 5 | 222145 | 224415 |
| Base 6 | 111156 | 113016 |
| Base 7 | 43557 | 45047 |
| Base 8 | 30278 | 31258 |
| Base 9 | 21229 | 22019 |
| Base 10 | 155910 | 162110 |
| Base 11 | 119811 | 124411 |
| Base 12 | a9b12 | b3112 |
| Base 13 | 92c13 | 97913 |
| Base 14 | 7d514 | 83b14 |
| Base 15 | 6de15 | 73115 |
| Base 16 | 61716 | 65516 |