A megaprime number is a prime with at least 1,000,000 digits. Not only is there an infinite number of megaprimes, but it means that almost every prime number is a megaprime. But why stop at a million digits? A gigaprime or bevaprime is a prime number with at least a BILLION digits — and no one has actually proven that one exists yet.
There’s $250,000 in it if you can find the first gigaprime, so GET TO WORK.