Compare 821 vs 1297
| Property | 821 | 1297 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 8211 | 12971 |
| Prime factorization | 821 | 1297 |
| Divisors count | 2 | 2 |
| Divisors | 1, 821 | 1, 1297 |
| Number of properties | 10 | 14 |
| Additive primes | 75th | 114th |
| Chen primes | 97th | 138th |
| Cousin primes (1st member) | 47th | |
| Good primes | 40th | |
| Isolated primes | 124th | |
| Long primes | 50th | 81st |
| Pierpont primes | 20th | |
| Primes | 142nd | 211th |
| Prime quadruplets (1st member) | 5th | |
| Prime triplets (1st member) | 25th | 34th |
| Pythagorean primes | 69th | 104th |
| Quartan primes | 8th | |
| Sexy primes (1st member) | 64th | 92nd |
| Sexy primes (2nd member) | 91st | |
| Sexy prime triplets (2nd member) | 35th | |
| Super primes | 47th | |
| Twin primes (1st member) | 32nd | |
| Roman numberals | DCCCXXI | MCCXCVII |
| Base 2 | 11001101012 | 101000100012 |
| Base 3 | 10101023 | 12100013 |
| Base 4 | 303114 | 1101014 |
| Base 5 | 112415 | 201425 |
| Base 6 | 34456 | 100016 |
| Base 7 | 22527 | 35327 |
| Base 8 | 14658 | 24218 |
| Base 9 | 11129 | 17019 |
| Base 10 | 82110 | 129710 |
| Base 11 | 68711 | a7a11 |
| Base 12 | 58512 | 90112 |
| Base 13 | 4b213 | 78a13 |
| Base 14 | 42914 | 68914 |
| Base 15 | 39b15 | 5b715 |
| Base 16 | 33516 | 51116 |