Compare 1231 vs 1399
| Property | 1231 | 1399 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 12311 | 13991 |
| Prime factorization | 1231 | 1399 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1231 | 1, 1399 |
| Number of properties | 6 | 6 |
| Additive primes | 108th | |
| Chen primes | 145th | |
| Emirps | 56th | 65th |
| Good primes | 52nd | |
| Harmonic primes | 76th | |
| Isolated primes | 131st | |
| Lucky primes | 52nd | |
| Primes | 202nd | 222nd |
| Sexy primes (1st member) | 88th | |
| Twin primes (2nd member) | 42nd | |
| Roman numberals | MCCXXXI | MCCCXCIX |
| Base 2 | 100110011112 | 101011101112 |
| Base 3 | 12001213 | 12202113 |
| Base 4 | 1030334 | 1113134 |
| Base 5 | 144115 | 210445 |
| Base 6 | 54116 | 102516 |
| Base 7 | 34067 | 40367 |
| Base 8 | 23178 | 25678 |
| Base 9 | 16179 | 18249 |
| Base 10 | 123110 | 139910 |
| Base 11 | a1a11 | 106211 |
| Base 12 | 86712 | 98712 |
| Base 13 | 73913 | 83813 |
| Base 14 | 63d14 | 71d14 |
| Base 15 | 57115 | 63415 |
| Base 16 | 4cf16 | 57716 |