Compare 1321 vs 1331
| Property | 1321 | 1331 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 1 |
| Total factors | 1 | 3 |
| Prime factorization | 13211 | 113 |
| Prime factorization | 1321 | 11 × 11 × 11 |
| Divisors count | 2 | 4 |
| Divisors | 1, 1321 | 1, 11, 121, 1331 |
| Number of properties | 7 | 0 |
| Additive primes | 118th | |
| Emirps | 63rd | |
| Harmonic primes | 74th | |
| Primes | 216th | |
| Pythagorean primes | 106th | |
| Sexy primes (1st member) | 94th | |
| Twin primes (2nd member) | 46th | |
| Roman numberals | MCCCXXI | MCCCXXXI |
| Base 2 | 101001010012 | 101001100112 |
| Base 3 | 12102213 | 12110223 |
| Base 4 | 1102214 | 1103034 |
| Base 5 | 202415 | 203115 |
| Base 6 | 100416 | 100556 |
| Base 7 | 35657 | 36117 |
| Base 8 | 24518 | 24638 |
| Base 9 | 17279 | 17389 |
| Base 10 | 132110 | 133110 |
| Base 11 | aa111 | 100011 |
| Base 12 | 92112 | 92b12 |
| Base 13 | 7a813 | 7b513 |
| Base 14 | 6a514 | 6b114 |
| Base 15 | 5d115 | 5db15 |
| Base 16 | 52916 | 53316 |