A small application that calculates factorial numbers can be a program that takes a single input from the user, which is the number for which the factorial needs to be calculated. The program then computes the factorial using a loop or recursion and displays the result to the user.

A small Factorial application is a program that calculates the factorial of a given number. The factorial of a number is the product of all positive integers up to and including that number. For example, the factorial of 5 is 5 x 4 x 3 x 2 x 1, which equals 120.