Compare 839 vs 842
| Property | 839 | 842 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 8391 | 21 × 4211 |
| Prime factorization | 839 | 2 × 421 |
| Divisors count | 2 | 4 |
| Divisors | 1, 839 | 1, 2, 421, 842 |
| Number of properties | 4 | 1 |
| Chen primes | 100th | |
| Isolated primes | 81st | |
| Primes | 146th | |
| Safe primes | 22nd | |
| Semiprimes | 254th | |
| Roman numberals | DCCCXXXIX | DCCCXLII |
| Base 2 | 11010001112 | 11010010102 |
| Base 3 | 10110023 | 10110123 |
| Base 4 | 310134 | 310224 |
| Base 5 | 113245 | 113325 |
| Base 6 | 35156 | 35226 |
| Base 7 | 23067 | 23127 |
| Base 8 | 15078 | 15128 |
| Base 9 | 11329 | 11359 |
| Base 10 | 83910 | 84210 |
| Base 11 | 6a311 | 6a611 |
| Base 12 | 59b12 | 5a212 |
| Base 13 | 4c713 | 4ca13 |
| Base 14 | 43d14 | 44214 |
| Base 15 | 3ae15 | 3b215 |
| Base 16 | 34716 | 34a16 |