...for when you just need to know.
Don't spend another second wondering if that number is prime. Check it! Primes Lite will give you a lightning quick verdict.
Upgrade to the full version of Primes and get:
Factoring of any integer that is not prime.
NEW feature: Up to the Minute Primes! Stay posted about the prime number nearest to your moment in time on every launch.
Expect more features soon to meet all of your prime number needs!
Primes: for when you just need to know.