import math
 
 
class prime:
    def __init__(self, x):
        self.a = 0
        self.k = 0
        self.i = 0
        self.a = x
 
    def calculate(self):
        self.k = 1
        self.i = 2
        while self.i <= math.sqrt(self.a):
            if self.a % self.i == 0:
                self.k = 0
                break
            else:
                self.k = 1
            self.i += 1
 
    def show(self):
        if self.k == 1:
            print(self.a, end='')
            print(" is a Prime Number.", end='')
        else:
            print(self.a, end='')
            print(" is Not a Prime Number.", end='')
 
 
print("Enter a number: ", end='')
a = int(input())
obj = prime(a)
obj.calculate()
obj.show()

 
#Coded by SAAHIL