This cat will ask you what number he should FACTORIALIZE. Factorial goes like this: 7 factorial [or 7!] = 7*6*5*4*3*2*1 = 5040. 10! = 10*9*8*7*6*5*4*3*2*1 = 3628800. 0! = 1. (Don't ask me...)
Please don't enter any numbers more than 170, it will count it as INFINITY.