Pierre de Fermat is being celebrated by Google today.
He is known for Fermat's Last Theorem, which consists of a deceptively simple-looking formula famously scrawled in a book's margin, where he claimed the proof was too large to fit.
Well, for FOUR centuries, people have attempted to solve and prove the formula, until finally the publication of a successful proof came out in 1995 by a "Sir Andrew Wiles", a Royal Society Research Professor at Oxford.
Talk about a long lasting troll.
For anyone interested, Fermat's Last Theorem states that no three positive integers a, b, and c can satisfy the equation an + bn = cn for any integer value of n greater than two.