Seems like Google is getting arithmetically-inclined today.
If you happen to see the Google homepage today, mathematical figures are shown on it.It, actually, is related to Pierre de Fermat because today is Fermat’s 410th birthday celebration.
According to wikipedia,
In number theory, 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, as long as a, b, and c are not equal. This theorem was first conjectured by Pierre de Fermat in 1637, famously in the margin of a copy of Arithmetica where he claimed he had a proof that was too large to fit in the margin. No successful proof was published until 1995 despite the efforts of countless mathematicians during the 358 intervening years. The unsolved problem stimulated the development of algebraic number theory in the 19th century and the proof of the modularity theorem in the 20th. It is among the most famous theorems in the history of mathematics and prior to its 1995 proof was in the Guinness Book of World Records for “most difficult maths problem”.
Just so today, I have learned about the number theory. Thanks to Pierre de Fermat for his brilliant minds!