View source for Fermat's little theorem

'''Fermat's little theorem''' is a [[theorem]] from [[number theory]]. It is named after [[Pierre de Fermat]] who found it in the 17th century. It is about the properties of [[Prime number|prime]]s. It says that if ''a'' is a number, and ''p'' is a prime, then 
:<math>a^p \equiv a\,(\mathrm{mod}\,p),</math>
If a is not a multiple of p, then the following is often used:
:<math>a^{p-1} \equiv 1\,(\mathrm{mod}\,p)</math>

{{Math-stub}}
[[Category:Number theory]]