Can anyone help me figure out why my function doesn't work correctly? Just a simple way to test if a number is prime. It keeps returning numbers that are multiples of 5 are prime. Every number ending in 5 I think, 25, 45, 85, etc. But I'm not sure why.

```
var prime = function(num){
if(num <= 2){
return "This is not a Prime number";
}
for (var i = 2; i < num; i++){
if(num % i === 0){
return "This is not a Prime number.";
} else {
return "This is a Prime number!";
}
}
};
prime(35);
```