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Sum of all prime numbers between 1 & 100

upto = int(input("Find sum of prime numbers upto : ")) sum = 0 for num in range(2, upto + 1): i = 2 for i in range(2, num): if (int(num % i) == 0): i = num break; if i is not num: sum += num print("\nSum of all prime numbers upto", upto, ":", sum) Can anyone please help me to check this program.when i run this program and enter 100 it's showing the result is 1058 But the sum of all prime numbers upto 100 must be 1060.

24th Apr 2020, 5:25 AM
sumaiya sharmin
sumaiya sharmin - avatar
3 Respuestas
+ 1
if 2 is not 2: Evaluates to false so 2 is never added to sum. Just start sum with a value of 2 and it should work fine. You can also then start the outer loop at 3.
24th Apr 2020, 7:12 AM
ChaoticDawg
ChaoticDawg - avatar
0
ran=int(input("Enter the range : ")) sum=0 for i in range(2,ran+1,1): count=0 for j in range(2,i,1): if i%j==0: count+=1 else: continue if count==0: sum+=i else: continue print(sum)
20th Dec 2022, 5:39 AM
priyanshu kumar
priyanshu kumar - avatar
0
def is_prime(number): """Check if a number is prime.""" if number < 2: return False for i in range(2, int(number**0.5) + 1): if number % i == 0: return False return True def sum_of_primes(start, end): """Calculate the sum of prime numbers in the given range.""" prime_sum = 0 for num in range(start, end + 1): if is_prime(num): prime_sum += num return prime_sum # Define the range start_range = 1 end_range = 100 # Calculate and print the sum of prime numbers in the specified range result = sum_of_primes(start_range, end_range) print(f"The sum of prime numbers between {start_range} and {end_range} is: {result}")
3rd Feb 2024, 1:10 PM
Solomon Adewale Oyerinde
Solomon Adewale Oyerinde - avatar