Write a program to check if a number is prime or not. and also print all Prime Numbers in given Interval by user.

Q. Write a program to 
    (i) Check if a number is prime or not.
   (ii) Print all Prime Numbers in given Interval by user.

Code:-

(i)

def primecheck(n):

  if n > 1:

    for i in range(2,int(n/2)+1):

      if (n % i) == 0:

        print(n,"is not a prime number.")

        break

    else:

      print(n,"is a prime number.")

  else:

    print(n,"is not a prime number.")

n = int(input("Enter a number:"))

primecheck(n)

Output:-

Code:-

(ii)

lower = int(input("Enter lower range:"))

upper = int(input("Enter upper range:"))

for num in range(lower, upper + 1):

  if num > 1:

    for i in range(2, num):

      if (num % i) == 0:

        break

    else:

      print(num)

Output:-