Compare 521 vs 533
| Property | 521 | 533 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 5211 | 131 × 411 |
| Prime factorization | 521 | 13 × 41 |
| Divisors count | 2 | 4 |
| Divisors | 1, 521 | 1, 13, 41, 533 |
| Number of properties | 6 | 1 |
| Chen primes | 70th | |
| Lucas primes | 8th | |
| Primes | 98th | |
| Pythagorean primes | 46th | |
| Semiprimes | 165th | |
| Solinas primes | 39th | |
| Twin primes (1st member) | 25th | |
| Roman numberals | DXXI | DXXXIII |
| Base 2 | 10000010012 | 10000101012 |
| Base 3 | 2010223 | 2012023 |
| Base 4 | 200214 | 201114 |
| Base 5 | 40415 | 41135 |
| Base 6 | 22256 | 22456 |
| Base 7 | 13437 | 13617 |
| Base 8 | 10118 | 10258 |
| Base 9 | 6389 | 6529 |
| Base 10 | 52110 | 53310 |
| Base 11 | 43411 | 44511 |
| Base 12 | 37512 | 38512 |
| Base 13 | 31113 | 32013 |
| Base 14 | 29314 | 2a114 |
| Base 15 | 24b15 | 25815 |
| Base 16 | 20916 | 21516 |