Compare 521 vs 1031
| Property | 521 | 1031 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 5211 | 10311 |
| Prime factorization | 521 | 1031 |
| Divisors count | 2 | 2 |
| Divisors | 1, 521 | 1, 1031 |
| Number of properties | 6 | 9 |
| Additive primes | 92nd | |
| Chen primes | 70th | 118th |
| Emirps | 39th | |
| Good primes | 46th | |
| Lucas primes | 8th | |
| Primes | 98th | 173rd |
| Pythagorean primes | 46th | |
| Solinas primes | 39th | 47th |
| Sophie germain primes | 40th | |
| Super primes | 40th | |
| Twin primes (1st member) | 25th | 37th |
| Roman numberals | DXXI | MXXXI |
| Base 2 | 10000010012 | 100000001112 |
| Base 3 | 2010223 | 11020123 |
| Base 4 | 200214 | 1000134 |
| Base 5 | 40415 | 131115 |
| Base 6 | 22256 | 44356 |
| Base 7 | 13437 | 30027 |
| Base 8 | 10118 | 20078 |
| Base 9 | 6389 | 13659 |
| Base 10 | 52110 | 103110 |
| Base 11 | 43411 | 85811 |
| Base 12 | 37512 | 71b12 |
| Base 13 | 31113 | 61413 |
| Base 14 | 29314 | 53914 |
| Base 15 | 24b15 | 48b15 |
| Base 16 | 20916 | 40716 |