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 108. [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]
The smallest prime number that produces four more primes when reiteratively doubled and reversed four consecutive
times (4723, 6449, 89821, and 246971). [Gaydos]
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