Be careful, doing str(num) requires python to convert the binary representation it has num stored as to a decimal. (C)Python implements a quadratic time change

Be careful, doing str(num) requires python to convert the binary representation it has num stored as to a decimal. (C)Python implements a quadratic time change of basis algorithm. This is slow enough that now for very large inputs python will raise "ValueError: Exceeds the limit (4300 digits) for integer string conversion"