Primus - The Prime Number App

Primus is the ultimate prime number generator. It has a simple User Interface and can do six powerful calculations (let's take your number as X):

•Determine if X is prime

•Find the factors of X

•Find the prime factors of X

•Find all the primes up to X

•Find up to the Xth prime

•Find all the primes within a range (X and another number)

More features can be included if suggested!