Tuesday, September 1, 2009

1993

1993 is a prime number.

1993 has a representation as a sum of two squares: 1993 = 122 + 432.

1993 is the hypotenuse of a primitive Pythagorean triple: 19932 = 10322 + 17052.

1993 is a number n such that n and (n + 1)/2 are both prime: 1993 and 997 are both primes.


On June 24,
1993, Andrew Wiles presented his proof of Fermat's Last Theorem, a problem that had been unsolved for more than three centuries.

Source:
Wikipedia

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