**Tell us what’s happening:**

I am trying to troubleshoot why the first two test pass but the second two do not. I see that the last 2 cases output the same number. Do I need to define my total variable differently to get the correct answer? I was having trouble finding resources that go in depth on how numbers are defined and what the ranges are for var and let.

**Your code so far**

```
function primeSummation(n) {
// Good luck!
//base case
let vecOfPrimes = [2]
let total = 0
//helper function that will test is the number we are looking at prime?
function isPrime(arr, number){
// .every is used to make sure a condition is satisfied for EVERY element in an
//array
var result = arr.every(function (e) {
return number % e
});
//if it is true then push the element into the array
if (result == true){
arr.push(number)
}
}
//use recursion to run the helper function repeatedly to get the nth
//prime number up to the 10001st prime number
for(let i = 3; vecOfPrimes.length < 10001; i++){
isPrime(vecOfPrimes, i)
}
function isSmallEnough(value) {
return value < n;
}
var filtered = vecOfPrimes.filter(isSmallEnough);
for(let i =0; i < filtered.length ; i ++){
total += filtered[i]
}
return total;
}
console.log(primeSummation(17));
console.log(primeSummation(2001));
console.log(primeSummation(140759));
console.log(primeSummation(2000000));
```

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**Challenge:** Problem 10: Summation of primes

**Link to the challenge:**

https://www.freecodecamp.org/learn/coding-interview-prep/project-euler/problem-10-summation-of-primes