Prime Number Checker

Program to check whether a number is prime or not.

function isPrime(n) {
  // Check if the number is less than 2 
  // (prime numbers are greater than 1)
  if (n < 2) {
    return false;
  }
  // Check for divisibility by numbers
  // from 2 up to the square root of the number
  for (let i = 2; i <= Math.sqrt(n); i++) {
    if (n % i === 0) {
    // If the number is divisible by any 
    // other number, it's not prime
      return false;
    }
  }
  // If the number is not divisible by any 
  // other number, it's prime
  return true;
}
console.log(isPrime(197293));