Python program to check whether it is a prime number or not If it is not a prime then display the next number that is prime

Write a Python code to input a number and check whether it is a prime number or not. If it is not a prime then display the next number that is prime.

Sample Input: 14

Sample Output: 17

n=int(input("Enter a number: "))
c=c1=m=0
for a in range(1, n+1):
    if(n%a==0):
        c=c+1
if(c==2):
    print(n, "is a prime number")
else:
    a=n
    m=n
    while(c1!=2):
        a=a+1
        c1=0
        for p in range(1,a+1):
            if(a%p==0):
                c1=c1+1
    print("Next prime number to ", m , " is ",a)

Enter a number: 11

11 is a prime number

>>> 

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Enter a number: 24

Next prime number to  24  is  29