Example
Suppose we wish to determine if n = 221 is prime. Randomly pick 1 ≤ a < 221, say a = 38. Check the above equality:
Either 221 is prime, or 38 is a Fermat liar, so we take another a, say 26:
So 221 is composite and 38 was indeed a Fermat liar.
Read more about this topic: Fermat Primality Test
Famous quotes containing the word example:
“Our intellect is not the most subtle, the most powerful, the most appropriate, instrument for revealing the truth. It is life that, little by little, example by example, permits us to see that what is most important to our heart, or to our mind, is learned not by reasoning but through other agencies. Then it is that the intellect, observing their superiority, abdicates its control to them upon reasoned grounds and agrees to become their collaborator and lackey.”
—Marcel Proust (1871–1922)