"Last Theorem" is the common name for a famous conjecture in number theory, stated by Fermat in 1637. It posits that no three positive integers $a, b, c$ can satisfy $a^n + b^n = c^n$ for any integer $n$ greater than $2$. Remaining unproven for over 350 years, its solution by Andrew Wiles in 1994 became a monumental event in mathematics.