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 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.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi5Nr_WShaTvYaz6pEXppJMwMo9XH8lP8OK4P7CHQEicGdE3Z8YebN14H_47mlvTYDl1PEXy8P3ftfnwCxxb6mCQURLgBVYCobcz3yjfqq4LkrVcTAV0womsPEcruuswYNbWEMs5WK4Rkg/s200/n1993.jpg)
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
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi5Nr_WShaTvYaz6pEXppJMwMo9XH8lP8OK4P7CHQEicGdE3Z8YebN14H_47mlvTYDl1PEXy8P3ftfnwCxxb6mCQURLgBVYCobcz3yjfqq4LkrVcTAV0womsPEcruuswYNbWEMs5WK4Rkg/s200/n1993.jpg)
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