Compare 1321 vs 1328
| Property | 1321 | 1328 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 2 |
| Total factors | 1 | 5 |
| Prime factorization | 13211 | 24 × 831 |
| Prime factorization | 1321 | 2 × 2 × 2 × 2 × 83 |
| Divisors count | 2 | 10 |
| Divisors | 1, 1321 | 1, 2, 4, 8, 16, 83, 166, 332, 664, 1328 |
| 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 | MCCCXXVIII |
| Base 2 | 101001010012 | 101001100002 |
| Base 3 | 12102213 | 12110123 |
| Base 4 | 1102214 | 1103004 |
| Base 5 | 202415 | 203035 |
| Base 6 | 100416 | 100526 |
| Base 7 | 35657 | 36057 |
| Base 8 | 24518 | 24608 |
| Base 9 | 17279 | 17359 |
| Base 10 | 132110 | 132810 |
| Base 11 | aa111 | aa811 |
| Base 12 | 92112 | 92812 |
| Base 13 | 7a813 | 7b213 |
| Base 14 | 6a514 | 6ac14 |
| Base 15 | 5d115 | 5d815 |
| Base 16 | 52916 | 53016 |