# 1637

This number is a prime.

René Descartes introduced the mathematical terms real and imaginary in his work *La Géométrie* in 1637. [Gevisier]

The number of prime pairs with difference of 88 below 10^8. [Haga]

The year Pierre de Fermat made one of mathematics most historic claims that later came to be known as Fermat's Last Theorem. This is not to be confused with Fermat's little theorem. [Beedassy]

(There are 4 curios for this number that have not yet been approved by an editor.)

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