Answer to Question #179146 in Python for jayanth

Question

Sum of Prime Numbers from M to N

Given two integers M and N, write a program to print the sum of prime numbers from M to N.Input

The first line of input will contain a positive integer (M).

The second line of input will contain a positive integer (N).Output

The output should be a single line containing the sum of prime numbers from M to N.Explanation

For example, if the given M and N are 5 and 11, as all the prime numbers from 5 to 11 are 5, 7, and 11. So the output should be sum of these primes (5+7+11), which is 23.

Similarly, if the given numbers are M is 18 and N is 40, as all the prime numbers from 18 to 40 are 19, 23, 29, 31,and 37. So the output should be sum of these primes (19+23+29+31+37), which is 139.

Sample Input 1

5

11

Sample Output 1

23

Sample Input 2

18

40

Sample Output 2

Answer 1

m = int(input("Enter M: "))
n = int(input("Enter N: "))
if m >= n:
    print("Incorrect range!")
else:
    total = 0
    flag = True
    for i in range(m, n+1):
        for j in range(2, i):
            if i%j == 0:
                flag = False
                break
        if flag == True:
            total += i
        flag = True
    print("Sum of Prime Numbers from ", m, " to ", n, " is: ", total)