检查给定的数字是否为质数，如果是质数，则找出该数字的阶乘，如果不是质数，则打印该数字的位数和

import math

def is_prime(num):
    if num <= 1:
        return False
    for i in range(2, int(math.sqrt(num)) + 1):
        if num % i == 0:
            return False
    return True

def factorial(num):
    fact = 1
    for i in range(1, num + 1):
        fact *= i
    return fact

def get_digit_count(num):
    return len(str(num))

def main():
    num = int(input("请输入一个数字："))
    if is_prime(num):
        print("该数字是质数")
        print("该数字的阶乘为:", factorial(num))
    else:
        print("该数字不是质数")
        print("该数字的位数为:", get_digit_count(num))

if __name__ == "__main__":
    main()