List all prime numbers between 2 and 100.

In the end, we print the sum of all the primes up to the last number as input by the user. Then we take that number and continue adding to the previously added prime numbers.

We do so by evaluating it and analyzing the remainder as not equal to zero. Now, we iterate each number to check if it is a prime number or not. As known, the first prime number is 2, so we started the for loop with it.

Then we use for loop in python to iterate for each number starting from 2. Here we started with the input from the user, where we take the number till which the sum of prime numbers in python needs to be known. It is a very basic and easier approach to solving our problem statement. If the number is prime, we add it to the output. Then, we check every number to see if it is a prime.

We traverse all the numbers from 1 to n in this approach. Let us understand the simple approach to finding the sum of prime numbers in python. Python Program to Find Sum of All Prime Numbers Between 1 to n. Both approaches are easy to understand, the only difference being that the Sieve of Eratosthenes approach is more efficient. We cover two specific approaches: the simple approach and the Sieve of Eratosthenes approach. Step3: Now, as the outer loop is completed, we can get the sum of primes by printing the temporary variable.Īs explained above, we can now move on to understand the program to find the sum of prime numbers in python as below. We can add and store it in a temporary variable if it is a prime number. Step2: Then, we check if the given number is a prime or not. Step1: As we are looking to find the sum of prime numbers up to N, we first need to iterate through each number up to the given number. To find the prime numbers with python, please go through the article Prime Number Program in Python as this covers the basic to advanced level of how we can find the prime numbers in python along with few programs of optimizing that code.Īfter you have gone through the above article, let us discuss the algorithm we will follow to find the sum of prime numbers in python. Introductionīefore starting with the algorithm where we shall understand how to find the sum of all prime numbers between 1 to n, we should first briefly understand what prime numbers are.Ī prime number can be defined as a positive integer greater than 1 and only divisible by two numbers, 1 and itself. Some prime numbers include 2, 3, 5, 7, 11, 13, etc.Īnd the sum of prime numbers denotes the summation of all the prime numbers less than or equal to the given input. In other words, prime numbers are positive integers greater than 1 with exactly two factors, one and the number itself. Prime numbers are natural numbers that are divisible by only one and the number itself.

List all prime numbers between 2 and 100.