Compare 1321 vs 1399
| Property | 1321 | 1399 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 13211 | 13991 |
| Prime factorization | 1321 | 1399 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1321 | 1, 1399 |
| Number of properties | 7 | 6 |
| Additive primes | 118th | |
| Chen primes | 145th | |
| Emirps | 63rd | 65th |
| Good primes | 52nd | |
| Harmonic primes | 74th | 76th |
| Isolated primes | 131st | |
| Primes | 216th | 222nd |
| Pythagorean primes | 106th | |
| Sexy primes (1st member) | 94th | |
| Twin primes (2nd member) | 46th | |
| Roman numberals | MCCCXXI | MCCCXCIX |
| Base 2 | 101001010012 | 101011101112 |
| Base 3 | 12102213 | 12202113 |
| Base 4 | 1102214 | 1113134 |
| Base 5 | 202415 | 210445 |
| Base 6 | 100416 | 102516 |
| Base 7 | 35657 | 40367 |
| Base 8 | 24518 | 25678 |
| Base 9 | 17279 | 18249 |
| Base 10 | 132110 | 139910 |
| Base 11 | aa111 | 106211 |
| Base 12 | 92112 | 98712 |
| Base 13 | 7a813 | 83813 |
| Base 14 | 6a514 | 71d14 |
| Base 15 | 5d115 | 63415 |
| Base 16 | 52916 | 57716 |