Fermat’s Little Theorem
www.math.nyu.edu › ~hausner › fermatFermat’s Little Theorem Fermat’s little theorem is so called to distinguish it from the famous \Fermat’s Last Theo-rem," aresultwhichhasintriguedmathematiciansforover300years. Fermat’sLastTheorem was only recently proved, with great di culty, in 1994.1 Before proving the little theorem, we need the following result on binomial coe cients. Theorem: If p is a prime, then p i!
Fermat's little theorem - Wikipedia
en.wikipedia.org › wiki › Fermat&Fermat's little theorem states that if p is a prime number, then for any integer a, the number a p − a is an integer multiple of p. In the notation of modular arithmetic, this is expressed as (). For example, if a = 2 and p = 7, then 2 7 = 128, and 128 − 2 = 126 = 7 × 18 is an integer multiple of 7.