This is a simple app for prime number calculation.

It checks if a number is prime, shows all factors if composite.
It can list a range of prime number, and non-prime numbers too.
It shows prime factorization, shows prime factors and composite factors.

It can check upto 1 trillion, list range limit 1 to 1 million, factorize upto 1 Trillion.

I hope this app is helpful for student, teachers, professional, prime number enthusiast. There is a add supported free version too.