The story
Named after French lawyer and amateur mathematician Pierre de Fermat (1601–1665), who famously claimed to have a proof, although it was not successfully proven until 1994 by Andrew Wiles.
Etymology from Wiktionary, CC BY-SA 4.0.
Fermat's Last Theorem
Today it means: The theorem that the Diophantine equation aⁿ+bⁿ=cⁿ has no solutions for positive integers a,b,c,n, where n>2. Full definition →