Finding prime number phone numbers

index.js

twilioPromise.then(twilioObject => {
  let verifiedPrimes = [];

  twilioObject.available_phone_numbers.forEach(e => {
    if (primality(e.phone_number.slice(2)) && !verifiedPrimes.includes(e.phone_number.slice(2))) {
      verifiedPrimes.push(e.phone_number.slice(2));
    }
  });
  
  console.log(verifiedPrimes);
});