Compare 1621 vs 1627
| Property | 1621 | 1627 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 16211 | 16271 |
| Prime factorization | 1621 | 1627 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1621 | 1, 1627 |
| Number of properties | 8 | 4 |
| Chen primes | 163rd | |
| Harmonic primes | 89th | 90th |
| Isolated primes | 155th | |
| Long primes | 101st | |
| Primes | 257th | 258th |
| Pythagorean primes | 123rd | |
| Sexy primes (1st member) | 111th | |
| Sexy primes (2nd member) | 111th | |
| Super primes | 55th | |
| Twin primes (2nd member) | 52nd | |
| Roman numberals | MDCXXI | MDCXXVII |
| Base 2 | 110010101012 | 110010110112 |
| Base 3 | 20200013 | 20200213 |
| Base 4 | 1211114 | 1211234 |
| Base 5 | 224415 | 230025 |
| Base 6 | 113016 | 113116 |
| Base 7 | 45047 | 45137 |
| Base 8 | 31258 | 31338 |
| Base 9 | 22019 | 22079 |
| Base 10 | 162110 | 162710 |
| Base 11 | 124411 | 124a11 |
| Base 12 | b3112 | b3712 |
| Base 13 | 97913 | 98213 |
| Base 14 | 83b14 | 84314 |
| Base 15 | 73115 | 73715 |
| Base 16 | 65516 | 65b16 |