what is the factorial of 285714by any easy method or the vedic science?

Answer 1

The non-Vedic approach is to use Stirling's approximation to the Gamma function. This comes down to:

ln(n!) = n ln(n) - n + 1/2 * ln(2*pi*n)

For n = 285714, this gives ln(n!) = 3303645.7794

So n =1.356 x 10^1434755

Answer 2

Oh do tell us the vedic way.