**Made this for sum all primes challenge. The code works in Sublime but not on FCC. Any thoughts?**

**in sublime it returns 73156 (the right answer)**

**in FCC it returns 64615**

**Code so far**

```
function sumPrimes(num) {
// start with a var to hold the total and set to zero
var sum = 0;
// run a loop from 2 to num inclusive
for(let i = 2; i <= num; i++) {
// set isPrime to true and try to prove false on next loop
let isPrime = true;
// checks if current i value is prime using a loop
// if i is not prime sets isPrime to false
for(let j = 2; j < i; j++) {
if(i % j === 0) {
isPrime = false;
}
}
// if isPrime is true add i to the sum
if(isPrime) {
sum += i;
}
}
// return the total
return sum;
}
sumPrimes(977);
```