2⁸²⁵⁸⁹⁹³³-1 is the largest known prime number and was discovered yesterday. It's substantially easier to find primes of the form 2ᵖ-1, also called Mersenne Primes. Here's why:https://t.co/z42XhZoENy pic.twitter.com/VLGeIhqIiX

— Fermat's Library (@fermatslibrary) December 22, 2018