Sum All Primes Solution works for 2/3

1

My solution works for the first 2 test but not the third. Any hints on what is going wrong? Thanks!

function sumPrimes(num) {
  let arr = [2];
  let i = 3;
  while (i <= num) {
    arr.push(i);
    i++;
  }
  let arr2 = arr.filter(n => n % 2 ===0 && n > 2);
  let arr3 = arr.filter(n => n % 3 ===0 && n > 3);
  let arr5 = arr.filter(n => n % 5 ===0 && n > 5);
  let arr7 = arr.filter(n => n % 7 ===0 && n > 7);
  let nonprimeArr = arr2.concat(arr3, arr5, arr7);

  let primeArr = arr.concat(nonprimeArr)
    .filter(el =>
    arr.indexOf(el) === -1 ||
    nonprimeArr.indexOf(el) === -1);
  console.log(primeArr);

  return primeArr.reduce((a, b) => a + b, 0);
}

sumPrimes(977);
2

I’m guessing since I don’t have the challenge memorized, but it might be that you used <= when you meant <.