Prime Numbers

Question 1

Determine if a number is prime?

Answer 1

function primeTester (n) {
 var sqrt = Math.sqrt(n);
 if(n \<= 1 || n % 2 === 0){
 if(n === 2){
 return true;
 }
 return false;
 }

 for(var i = 3; i \<= sqrt; i+=2){
 if(n % i === 0){
 return false;
 }
 }
 return true;
}