Prime Number

An integer value N is passed as the input. The program must print YES if N is prime number. Else the program must print NO. 

Input Format: The first line denotes the value of N. Output Format: YES or NO based on if N is a prime number or not. (The OUTPUT is CASE SENSITIVE). 

Boundary Conditions: 2 <= N <= 9999999 

Example Input/Output 1:

Input:
19 

Output:

YES 

Example Input/Output 2: 

Input: 

189210 

Output:

NO

Source Code: //Python

n=int(input())

f=0

for i in range(2,n):

    if n%i==0:

        f=1

if f==0:

    print("YES")

else:

    print("NO")