Compare 521 vs 2207
| Property | 521 | 2207 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 5211 | 22071 |
| Prime factorization | 521 | 2207 |
| Divisors count | 2 | 2 |
| Divisors | 1, 521 | 1, 2207 |
| Number of properties | 6 | 9 |
| Additive primes | 173rd | |
| Chen primes | 70th | 200th |
| Cousin primes (2nd member) | 68th | |
| Isolated primes | 196th | |
| Long primes | 128th | |
| Lucas primes | 8th | 9th |
| Primes | 98th | 329th |
| Pythagorean primes | 46th | |
| Safe primes | 42nd | |
| Sexy primes (1st member) | 136th | |
| Solinas primes | 39th | |
| Twin primes (1st member) | 25th | |
| Roman numberals | DXXI | MMCCVII |
| Base 2 | 10000010012 | 1000100111112 |
| Base 3 | 2010223 | 100002023 |
| Base 4 | 200214 | 2021334 |
| Base 5 | 40415 | 323125 |
| Base 6 | 22256 | 141156 |
| Base 7 | 13437 | 63027 |
| Base 8 | 10118 | 42378 |
| Base 9 | 6389 | 30229 |
| Base 10 | 52110 | 220710 |
| Base 11 | 43411 | 172711 |
| Base 12 | 37512 | 133b12 |
| Base 13 | 31113 | 100a13 |
| Base 14 | 29314 | b3914 |
| Base 15 | 24b15 | 9c215 |
| Base 16 | 20916 | 89f16 |