Compare 516 vs 521
| Property | 516 | 521 |
|---|---|---|
| Type | composite number | prime |
| Unique factors | 3 | 1 |
| Total factors | 4 | 1 |
| Prime factorization | 22 × 31 × 431 | 5211 |
| Prime factorization | 2 × 2 × 3 × 43 | 521 |
| Divisors count | 12 | 2 |
| Divisors | 1, 2, 3, 4, 6, 12, 43, 86, 129, 172, 258, 516 | 1, 521 |
| Number of properties | 0 | 6 |
| Chen primes | 70th | |
| Lucas primes | 8th | |
| Primes | 98th | |
| Pythagorean primes | 46th | |
| Solinas primes | 39th | |
| Twin primes (1st member) | 25th | |
| Roman numberals | DXVI | DXXI |
| Base 2 | 10000001002 | 10000010012 |
| Base 3 | 2010103 | 2010223 |
| Base 4 | 200104 | 200214 |
| Base 5 | 40315 | 40415 |
| Base 6 | 22206 | 22256 |
| Base 7 | 13357 | 13437 |
| Base 8 | 10048 | 10118 |
| Base 9 | 6339 | 6389 |
| Base 10 | 51610 | 52110 |
| Base 11 | 42a11 | 43411 |
| Base 12 | 37012 | 37512 |
| Base 13 | 30913 | 31113 |
| Base 14 | 28c14 | 29314 |
| Base 15 | 24615 | 24b15 |
| Base 16 | 20416 | 20916 |