Compare 1321 vs 1381
| Property | 1321 | 1381 |
|---|---|---|
| Type | prime | prime |
| Unique factors | 1 | 1 |
| Total factors | 1 | 1 |
| Prime factorization | 13211 | 13811 |
| Prime factorization | 1321 | 1381 |
| Divisors count | 2 | 2 |
| Divisors | 1, 1321 | 1, 1381 |
| Number of properties | 7 | 7 |
| Additive primes | 118th | 122nd |
| Chen primes | 144th | |
| Emirps | 63rd | 64th |
| Harmonic primes | 74th | |
| Isolated primes | 130th | |
| Long primes | 86th | |
| Primes | 216th | 221st |
| Pythagorean primes | 106th | 109th |
| Sexy primes (1st member) | 94th | |
| Twin primes (2nd member) | 46th | |
| Roman numberals | MCCCXXI | MCCCLXXXI |
| Base 2 | 101001010012 | 101011001012 |
| Base 3 | 12102213 | 12200113 |
| Base 4 | 1102214 | 1112114 |
| Base 5 | 202415 | 210115 |
| Base 6 | 100416 | 102216 |
| Base 7 | 35657 | 40127 |
| Base 8 | 24518 | 25458 |
| Base 9 | 17279 | 18049 |
| Base 10 | 132110 | 138110 |
| Base 11 | aa111 | 104611 |
| Base 12 | 92112 | 97112 |
| Base 13 | 7a813 | 82313 |
| Base 14 | 6a514 | 70914 |
| Base 15 | 5d115 | 62115 |
| Base 16 | 52916 | 56516 |