Compare 1213 vs 1399
| Property | 1213 | 1399 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 12131 | 13991 |
| Prime factorization | 1213 | 1399 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1213 | 1, 1399 |
| Number of properties | 7 | 6 |
| Additive primes | 106th | |
| Chen primes | 145th | |
| Cousin primes (1st member) | 45th | |
| Emirps | 52nd | 65th |
| Good primes | 49th | 52nd |
| Harmonic primes | 76th | |
| Isolated primes | 117th | 131st |
| Primes | 198th | 222nd |
| Pythagorean primes | 97th | |
| Roman numberals | MCCXIII | MCCCXCIX |
| Base 2 | 100101111012 | 101011101112 |
| Base 3 | 11222213 | 12202113 |
| Base 4 | 1023314 | 1113134 |
| Base 5 | 143235 | 210445 |
| Base 6 | 53416 | 102516 |
| Base 7 | 33527 | 40367 |
| Base 8 | 22758 | 25678 |
| Base 9 | 15879 | 18249 |
| Base 10 | 121310 | 139910 |
| Base 11 | a0311 | 106211 |
| Base 12 | 85112 | 98712 |
| Base 13 | 72413 | 83813 |
| Base 14 | 62914 | 71d14 |
| Base 15 | 55d15 | 63415 |
| Base 16 | 4bd16 | 57716 |