JS-prime.js

const isPrime = (number) =>
{
  let prime = true;
  for (let i = 2; i <= number / 2; ++i)
  {
    if (number % i == 0)
    {
      prime = false;
      break;
    }
  }

  return prime;
}

const number = 6673214311;

console.log(`${number} is `);

console.time();
if (isPrime(number)) {
  console.log('Prime')
} else {
  console.log('Not prime');
}
console.timeEnd();

It takes 24955.456ms on my machine