Fermat number

English Etymology en Pierre de Fermat 1601 1665 French lawyer and amateur mathematician =. Noun en number theory An integer which is one more than two raised to a power which is itself a power of two (i.e., is expressible in the form for some ); equivalently, a number that is one more than two raised to some power (is expressible as ) and is prime. en Fermat prime Usage notes The equivalence of the two definitions follows from the fact that, as can be demonstrated, for a number of the form to be prime it is necessary (though not sufficient) that for some . Translations integer which is one more than two raised to a power which is itself a power of two Bulgarian: bg число́ на Ферма́ n Polish: pl liczba Fermata f