User blog comment:Ikosarakt1/Leading digits of googolgong factorial/@comment-5529393-20130316233046/@comment-5150073-20130318091954

Since it is arbitrary precision calculator, for every irrational number we ned to specify the number of digits to calculation. n is not a variable, it is a precision function (I didn't create this calculator, so all requests to the author). For example, sqrt(n(20,30)) means that square root of 20 will be calculated up to 30 digits of precision. Write sqrt(20) is illegal on this calculator. That seem inconvenient, but the number of digits is awesome (that calc is able to calculate, say, 2^10000000 after a few seconds).