1993
This number is a prime.
The smallest prime p that gives a zeroless pandigital number when the Fibonacci-like recurrence a(n) = a(n - 1) + a(n - 2) with a(1) = 1 and a(2) = p is applied. [De Geest]
In the prime year 1993 Caldwell announced what was then both the largest known factorial prime (3610! - 1) and the largest known primorial prime (24029# + 1). [Post]
In June 1993 Andrew Wiles first announced that he had proven the Shimura-Taniyama-Weil conjecture for enough special classes of curves that to complete the proof of Fermat's Last Theorem. Soon an error was found! With Richard Taylor he released a corrected proof in September 1994 (published in 1995). [Beedassy]
The year Hillel Furstenberg received the Israel Prize. [Lovas]