Compare 6781 vs 6782
| Property | 6781 | 6782 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 67811 | 21 × 33911 |
| Prime factorization | 6781 | 2 × 3391 |
| Divisors count | 2 | 4 |
| Divisors | 1, 6781 | 1, 2, 3391, 6782 |
| Number of properties | 4 | 1 |
| Harmonic primes | 319th | |
| Primes | 873rd | |
| Pythagorean primes | 431st | |
| Semiprimes | 1819th | |
| Twin primes (2nd member) | 157th | |
| Roman numberals | ||
| Base 2 | 11010011111012 | 11010011111102 |
| Base 3 | 1000220113 | 1000220123 |
| Base 4 | 12213314 | 12213324 |
| Base 5 | 2041115 | 2041125 |
| Base 6 | 512216 | 512226 |
| Base 7 | 255257 | 255267 |
| Base 8 | 151758 | 151768 |
| Base 9 | 102649 | 102659 |
| Base 10 | 678110 | 678210 |
| Base 11 | 510511 | 510611 |
| Base 12 | 3b1112 | 3b1212 |
| Base 13 | 311813 | 311913 |
| Base 14 | 268514 | 268614 |
| Base 15 | 202115 | 202215 |
| Base 16 | 1a7d16 | 1a7e16 |