I will produce a tiny fraction of the full number for you here, but if you want the full thing, you must go to the prime site http://prime.isthe.com/chongo/tech/math/prime/m43112609/prime.html
What a mouth full!!!!
So, here is the goal. Using a large fake check made out for $100,000 and a small bag of candy, pose the challenge to see who can come up with the largest prime number using only paper, pencil and calculator (don't let them cheat on their cell phones by Googling)