Find the sum of all the primes below two million using java script

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I am trying this code

var sum = 0

for (i = 0; i < 2000000; i++) {

function checkIfPrime() {

    for (factor = 2; factor < i; factor++) {
        if (i % factor = 0) {
            sum = sum;
        }
        else {
            sum += factor;
        }
    }
}
}
document.write(sum);  

I am getting this error:

Invalid left-hand side in assignment

Change if(i % factor = 0) to if( i % factor == 0) and remove the function checkIfPrime() inside the for loop.

var sum = 0

for (i = 0; i < 2000000; i++) { 
   for (factor = 2; factor < i; factor++) {
      if (i % factor == 0) {
        sum = sum;
      }
      else {
        sum += factor;
      }
    }
} 
document.write(sum);

The function inside the loop is pointless.

Find the sum of all the primes below two million. Euler problem 10 , Сумма простых чисел меньше 10 - это 2 + 3 + 5 + 7 = 17. Найдите сумму всех простых чисел меньше двух миллионов. <script>. function sumPrime(x) {. Using float as the sum is the problem. The largest integer k such that all integers from [-k, k] are exactly representable in 32-bit float is 2^24 1 ; after that you will start losing precision in some integers. Since your sum is outside that range that, by an absurd margin, you lose precision and all bets are off.

function sumPrimes(num) {
  var sum = 0;
  for (var i = 2; i < num; i++) {
    if (isPrime(i)) {
      sum += i;
      console.log(sum);
    }
  }
  return sum;
}

function isPrime(num) {
  if (num <= 1) return false;
  else if (num <= 3) return true;
  else if (num % 2 == 0 || num % 3 == 0) return false;
  var i = 5;
  while (i * i <= num) {
    if (num % i == 0 || num % (i + 2) == 0) return false;
    i += 6;
  }
  return true
}

console.log(sumPrimes(2000000));

freeCodeCamp Challenge Guide: Sum All Primes - Guide, Sum All Primes Problem Explanation The explanation for this problem is very The tricky part is on generating the list of prime numbers. Hint 2. Check this link if you prefer to find a solution for finding primes, or try Native Browser JavaScript to check items less than the current item squared return (el % primes[i] != Java Program to find Sum of Prime Numbers using For Loop. This program allows the user to enter any integer value. Next, it will find the sum of all Prime numbers from 1 to 100 using For Loop. Java Program to find Sum of Prime Numbers using While Loop. This program will calculate the sum of prime numbers between 1 and 100 using While Loop.

it looks like your code outputs wrong result, for example prime numbers below 6 are 2, 3 and 5, their sum is 10, your code outputs 14 in this case. Here is another code which outputs sum of primes below max value:

var sieve = [], primes = [], sum = 0, max = 5;

for (var i = 2; i <= max; ++i) {
    if (!sieve[i]) {
        // i has not been marked -- it is prime
        sum += i;
        for (var j = i << 1; j <= max; j += i) {
            sieve[j] = true;
        }
    }
}
console.log(sum);

Optimizing Primes - Coder Bastion, I gave myself ten minutes to find a solution using JavaScript in Node. Find the sum of all prime numbers less than two million. I came up with the  Find the sum of all the primes below two million using java script. for example prime numbers below 6 are 2, 3 and 5, their sum is 10, your code outputs 14 in

Well, I did with 250 otherwise my screen would have frozen. First of you have to single out the prime numbers after placing them inside an empty Array, which I called primeNumbers from 2 to whatever number you want. Then I create a function that would filter the prime numbers and then add them all with a reduce method inside of another variable called sum and return that variable.

  var primeNumbers =[];

    for(var i = 2; i < 250; i++){
        primeNumbers.push(i);

      }//for loop

      function isPrime(value){
        for(var x=2; x< value; x++){

        if(value % x===0){
          return false;
        }

        }//for loop
        return true;
      }//function isPrime to filter

     var sum = primeNumbers.filter(isPrime).reduce(function(acc, val) {
      return acc + val;
    }, 0);


    console.log(sum);

Sum of all Primes below 2000000 – Problem 10, The problem is Find the sum of all the primes below two million. I take three different approaches to the solution, and focus on Sieve of Eratosthenes, which I will  Input : 11 Output : 28 Explanation : Primes between 1 to 11 : 2, 3, 5, 7, 11. A simple solution is to traverse all numbers from 1 to n. For every number, check if it is a prime. If yes, add it to result. An efficient solution is to use Sieve of Eratosthenes to find all prime numbers from till n and then do their sum.

when you are using a variable inside the loop you need to declare them. You have two points in this case

  1. i is not declared
  2. factor is not declare

Your if (i % factor = 0) is wrong, as pointed by some people above.

Also, you never call the checkIfPrime() method. I don't why you created them. Also, I improved your checkIfPrime() method. Please call sumOfPrimes() method in the code below and it should work. You can modify it according to your need

function sumOfPrimes()
{
   var sum =0;
   for (var i = 0; i < 2000000; i++) 
   {

        var temp = Math.sqrt(i);

        for (var factor = 2; factor < temp; factor++)
        {
            if (i % factor === 0) 
            {
                sum += factor;
            }
        }

}
   console.log(sum);
}

project euler#10: sum of primes < 2,000,000, host in 50+ programming languages: Clojure, Haskell, Kotlin (beta), QBasic, Forth, LOLCODE, BrainF, Emoticon, Bloop, Unlambda, JavaScript, CoffeeScript,  Java program to calculate the sum of N numbers using arrays, recursion, static method, using while loop. Here is the complete Java program with sample outputs. You can learn more tutorials here and Java interview questions for beginners. With the following program, you can even print the sum of two numbers or three numbers up to N numbers.

[Solved] Calculate the sum of all the primes below two million , 1. If you don't know what's wrong, cut your problem into smaller ones! In this case (a) verify that the primes you calculate are indeed (all the)  The sum of the primes below 10 is 2 + 3 + 5 + 7 = 17. Find the sum of all the primes below two million. There is nothing particular tricky about this question, and since there isn’t a formula for finding all primes, we will have to brute force a solution. However, the brute force solution can be more or less elegant.

Project Euler Problem #10 : Summation of primes - JSFiddle, Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor. <br />Find the sum of all the primes below two million. 8. <br />. 9. </div>​. 10. Project Euler Problem #10 - Summation of Primes (in Python) # The sum of the primes below 10 is 2 + 3 + 5 + 7 = 17. # Find the sum of all the primes below two million.

Project Euler Problem 10 Solution, presents solutions to Project Euler Problem 10 in Clojure, Go, Haskell, JavaScript, Python, Ruby and Rust. Find the sum of all the primes below two million. Find the product of sum of two diagonals of a square Matrix Print all prime numbers less than or equal to N Given a number N, the task is to print all prime numbers less than or equal to N.

Comments
  • What is the error you're getting?
  • i am getting this error Invalid left-hand side in assignment
  • rather than defining your function inside of a loop, try calling checkIfPrime(i) inside your loop, and adding to the sum if it is true. You are on the right track!
  • You should explain more clearly why it's necessary to declare loop variables; JS by default does not require variables to be declared before use.
  • @Babu The solution that has been accepted as an answer states the same thing. Then why do you give a -1 to this answer.