A Truely Large Prime
(Another of the Prime Pages' resources)
The Largest Known Primes Icon
The nth Prime Page will now find any of the first 2,623,557,157,654,233 primes or π(x) for x up to 100,000,000,000,000,000.

Eve, the now ubiquitous eaves-dropper, first considered cryptology when her Dad showed her a very large prime.  Curiously it was also the smallest prime.
a big 2 is a big
Image by Matthew Harvey © 2003