Compare 521 vs 530
| Property | 521 | 530 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 3 |
| Total factors | 1 | 3 |
| Prime factorization | 5211 | 21 × 51 × 531 |
| Prime factorization | 521 | 2 × 5 × 53 |
| Divisors count | 2 | 8 |
| Divisors | 1, 521 | 1, 2, 5, 10, 53, 106, 265, 530 |
| Number of properties | 6 | 0 |
| Chen primes | 70th | |
| Lucas primes | 8th | |
| Primes | 98th | |
| Pythagorean primes | 46th | |
| Solinas primes | 39th | |
| Twin primes (1st member) | 25th | |
| Roman numberals | DXXI | DXXX |
| Base 2 | 10000010012 | 10000100102 |
| Base 3 | 2010223 | 2011223 |
| Base 4 | 200214 | 201024 |
| Base 5 | 40415 | 41105 |
| Base 6 | 22256 | 22426 |
| Base 7 | 13437 | 13557 |
| Base 8 | 10118 | 10228 |
| Base 9 | 6389 | 6489 |
| Base 10 | 52110 | 53010 |
| Base 11 | 43411 | 44211 |
| Base 12 | 37512 | 38212 |
| Base 13 | 31113 | 31a13 |
| Base 14 | 29314 | 29c14 |
| Base 15 | 24b15 | 25515 |
| Base 16 | 20916 | 21216 |