Compare 487 vs 521
| Property | 487 | 521 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 4871 | 5211 |
| Prime factorization | 487 | 521 |
| Divisors count | 2 | 2 |
| Divisors | 1, 487 | 1, 521 |
| Number of properties | 10 | 6 |
| Additive primes | 54th | |
| Chen primes | 65th | 70th |
| Cousin primes (1st member) | 26th | |
| Happy primes | 23rd | |
| Harmonic primes | 37th | |
| Isolated primes | 46th | |
| Long primes | 33rd | |
| Lucas primes | 8th | |
| Lucky primes | 26th | |
| Pierpont primes | 16th | |
| Primes | 93rd | 98th |
| Pythagorean primes | 46th | |
| Solinas primes | 39th | |
| Twin primes (1st member) | 25th | |
| Roman numberals | CDLXXXVII | DXXI |
| Base 2 | 1111001112 | 10000010012 |
| Base 3 | 2000013 | 2010223 |
| Base 4 | 132134 | 200214 |
| Base 5 | 34225 | 40415 |
| Base 6 | 21316 | 22256 |
| Base 7 | 12647 | 13437 |
| Base 8 | 7478 | 10118 |
| Base 9 | 6019 | 6389 |
| Base 10 | 48710 | 52110 |
| Base 11 | 40311 | 43411 |
| Base 12 | 34712 | 37512 |
| Base 13 | 2b613 | 31113 |
| Base 14 | 26b14 | 29314 |
| Base 15 | 22715 | 24b15 |
| Base 16 | 1e716 | 20916 |