Compare 1213 vs 1231
| Property | 1213 | 1231 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 12131 | 12311 |
| Prime factorization | 1213 | 1231 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1213 | 1, 1231 |
| Number of properties | 7 | 6 |
| Additive primes | 106th | 108th |
| Cousin primes (1st member) | 45th | |
| Emirps | 52nd | 56th |
| Good primes | 49th | |
| Isolated primes | 117th | |
| Lucky primes | 52nd | |
| Primes | 198th | 202nd |
| Pythagorean primes | 97th | |
| Sexy primes (1st member) | 88th | |
| Twin primes (2nd member) | 42nd | |
| Roman numberals | MCCXIII | MCCXXXI |
| Base 2 | 100101111012 | 100110011112 |
| Base 3 | 11222213 | 12001213 |
| Base 4 | 1023314 | 1030334 |
| Base 5 | 143235 | 144115 |
| Base 6 | 53416 | 54116 |
| Base 7 | 33527 | 34067 |
| Base 8 | 22758 | 23178 |
| Base 9 | 15879 | 16179 |
| Base 10 | 121310 | 123110 |
| Base 11 | a0311 | a1a11 |
| Base 12 | 85112 | 86712 |
| Base 13 | 72413 | 73913 |
| Base 14 | 62914 | 63d14 |
| Base 15 | 55d15 | 57115 |
| Base 16 | 4bd16 | 4cf16 |