**Tell us what’s happening:**

Describe your issue in detail here.

sp in the solution the loop is initiated at (i) and then stopping conditions is when (i <= Math.sqrt(num)), so it stops at i less than or EQUAL TO sqrt of 9 => 3

so if we provided num at 9, sqrt is 3, so (i) inside the loop will reach the value 3,(9%3=0)

but 9 is not a prime number !!

when I console.log the num for some reason it never reaches 3, it goes 2.3, 2.4, 2.6,…2.8

not sure how is this possible!

```
**Your code so far**
```

```
function sumPrimes(num) {
let arr=[];
// for (let i=num; i >= 0; i--){
// arr.push(i)
// }
// let primeNums = arr.filter(number => number%number)
function isPrime(num){
if (num < 2) return false;
for(let i=2; i <= Math.sqrt(num); i++){
console.log(Math.sqrt(num), i)
if(num%i == 0) return false
} return true
}
let sum =0;
for (let i=2; i < num ; i++){
if (isPrime(i) === true) {
sum += i
}
}
// console.log(sum)
// console.log(isPrime(3))
return sum;
}
sumPrimes(10);
```

```
**Your browser information:**
```

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**Challenge:** Sum All Primes

**Link to the challenge:**