**Tell us what’s happening:**

My issue is that my results are off by 1 and I don’t understand why?

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

```
function sumPrimes(num) {
let arr = [1];
for (let i = 2; i <= num; i++){
let div = 0;
for (let j = 0; j < arr.length; j++){
if (i % arr[j] == 0){
div++;
}
}
if (div == 1){
arr.push(i)
}
}
console.log(arr)
num = arr.reduce((a,b) => a+b);
console.log(num)
return num;
}
sumPrimes(10);
sumPrimes(977)
```

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

User Agent is: `Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.36`

**Challenge:** Intermediate Algorithm Scripting - Sum All Primes

**Link to the challenge:**