Python Program to Find How Many Prime Numbers in an Interval

In this program, you’ll learn to print all prime numbers within an interval using for loops and display it.

A positive integer greater than 1 which has no other factors except 1 and the number itself is called a prime number.

2, 3, 5, 7 etc. are prime numbers as they do not have any other factors. But 6 is not prime (it is composite) since, 2 x 3 = 6.

Python Code:


count=0
num1 = int(input("Number 1: "))
num2 = int(input("Number 2: "))
 
print('Prime numbers between',num1,' and',num2,' are:')
 
for num in range(num1,num2 + 1):
   if num > 1:
       for i in range(2,num):
           if (num % i) == 0:
               break
       else:
           print(num)
           count=count+1
print('We found {0} prime numbers'.format(count))

count=0

num1 = int(input("Number 1: "))

num2 = int(input("Number 2: "))

print('Prime numbers between',num1,' and',num2,' are:')

for num in range(num1,num2 + 1):

if num > 1:

for i in range(2,num):

if (num % i) == 0:

break

else:

print(num)

count=count+1

print('We found {0} prime numbers'.format(count))

Output:

Python Program to Find How Many Prime Numbers in an Interval

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