Python Program to Print all Prime Numbers in an Interval – 2025

Hey guys, in this blog we will see a Python Program to Print all Prime Numbers in an Interval.

Code

# Python Program to Print all Prime Numbers in an Interval

lower = int(input('Enter the lower bound of range -> '))
upper = int(input('Enter the upper bound of range -> '))

print(f"Prime numbers between {lower} and {upper} are: ")

for num in range(lower, upper + 1):
   # all prime numbers are greater than 1
   if num > 1:
        for i in range(2, num):
            if (num % i) == 0:
                break
        else:
            print(num)

Output

Enter the lower bound of range -> 2
Enter the upper bound of range -> 30
Prime numbers between 2 and 30 are: 
2
3
5
7
11
13
17
19
23
29

• Here we are simply running a loop from the lower bound to the upper bound and checking for every number that if it’s a prime number or not.
• We are using the same logic for finding the prime numbers that we used here – Python Program to Check Prime Numbers

Check out our other python programming examples…