Compare 2857 vs 2866
| Property | 2857 | 2866 |
|---|---|---|
| Type | prime | semiprime |
| Unique factors | 1 | 2 |
| Total factors | 1 | 2 |
| Prime factorization | 28571 | 21 × 14331 |
| Prime factorization | 2857 | 2 × 1433 |
| Divisors count | 2 | 4 |
| Divisors | 1, 2857 | 1, 2, 1433, 2866 |
| Number of properties | 6 | 1 |
| Chen primes | 246th | |
| Cousin primes (1st member) | 86th | |
| Isolated primes | 256th | |
| Primes | 415th | |
| Pythagorean primes | 204th | |
| Semiprimes | 800th | |
| Sexy primes (2nd member) | 165th | |
| Roman numberals | MMDCCCLVII | MMDCCCLXVI |
| Base 2 | 1011001010012 | 1011001100102 |
| Base 3 | 102202113 | 102210113 |
| Base 4 | 2302214 | 2303024 |
| Base 5 | 424125 | 424315 |
| Base 6 | 211216 | 211346 |
| Base 7 | 112217 | 112337 |
| Base 8 | 54518 | 54628 |
| Base 9 | 38249 | 38349 |
| Base 10 | 285710 | 286610 |
| Base 11 | 216811 | 217611 |
| Base 12 | 17a112 | 17aa12 |
| Base 13 | 13ba13 | 13c613 |
| Base 14 | 108114 | 108a14 |
| Base 15 | ca715 | cb115 |
| Base 16 | b2916 | b3216 |