Compare 3215 vs 3221
| Property | 3215 | 3221 |
|---|---|---|
| Type | semiprime | prime |
| Unique factors | 2 | 1 |
| Total factors | 2 | 1 |
| Prime factorization | 51 × 6431 | 32211 |
| Prime factorization | 5 × 643 | 3221 |
| Divisors count | 4 | 2 |
| Divisors | 1, 5, 643, 3215 | 1, 3221 |
| Number of properties | 1 | 7 |
| Chen primes | 271st | |
| Cousin primes (2nd member) | 93rd | |
| Emirps | 110th | |
| Isolated primes | 289th | |
| Long primes | 181st | |
| Primes | 456th | |
| Pythagorean primes | 225th | |
| Semiprimes | 904th | |
| Roman numberals | MMMCCXV | MMMCCXXI |
| Base 2 | 1100100011112 | 1100100101012 |
| Base 3 | 111020023 | 111020223 |
| Base 4 | 3020334 | 3021114 |
| Base 5 | 1003305 | 1003415 |
| Base 6 | 225156 | 225256 |
| Base 7 | 122427 | 122517 |
| Base 8 | 62178 | 62258 |
| Base 9 | 43629 | 43689 |
| Base 10 | 321510 | 322110 |
| Base 11 | 246311 | 246911 |
| Base 12 | 1a3b12 | 1a4512 |
| Base 13 | 160413 | 160a13 |
| Base 14 | 125914 | 126114 |
| Base 15 | e4515 | e4b15 |
| Base 16 | c8f16 | c9516 |