Oh .. it's calculating ... as you can see .. but you need to put the result into some data type which can hold this large number. Usually data types can't hold them, you're absolutely right but if you generate the result into a vector or a list you can print it on the screen as you see. The result is correct. Just verify the first numbers of the result with the Calculator from your Windows.

4.02387260077093773543702433923e+2567 << Here it is your aproximation but I wanted the full result.