Compare 823 vs 1213
| Property | 823 | 1213 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 8231 | 12131 |
| Prime factorization | 823 | 1213 |
| Divisors count | 2 | 2 |
| Divisors | 1, 823 | 1, 1213 |
| Number of properties | 11 | 7 |
| Additive primes | 76th | 106th |
| Cousin primes (1st member) | 34th | 45th |
| Emirps | 52nd | |
| Good primes | 49th | |
| Isolated primes | 117th | |
| Left-truncatable primes | 46th | |
| Long primes | 51st | |
| Lucky primes | 39th | |
| Primes | 143rd | 198th |
| Prime quadruplets (2nd member) | 5th | |
| Prime triplets (1st member) | 26th | |
| Prime triplets (2nd member) | 25th | |
| Pythagorean primes | 97th | |
| Sexy primes (1st member) | 65th | |
| Twin primes (2nd member) | 32nd | |
| Roman numberals | DCCCXXIII | MCCXIII |
| Base 2 | 11001101112 | 100101111012 |
| Base 3 | 10101113 | 11222213 |
| Base 4 | 303134 | 1023314 |
| Base 5 | 112435 | 143235 |
| Base 6 | 34516 | 53416 |
| Base 7 | 22547 | 33527 |
| Base 8 | 14678 | 22758 |
| Base 9 | 11149 | 15879 |
| Base 10 | 82310 | 121310 |
| Base 11 | 68911 | a0311 |
| Base 12 | 58712 | 85112 |
| Base 13 | 4b413 | 72413 |
| Base 14 | 42b14 | 62914 |
| Base 15 | 39d15 | 55d15 |
| Base 16 | 33716 | 4bd16 |