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Fermat number

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Fermat number

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positive integer of the form (2^(2^n))+1

Key facts

Named after
Pierre de Fermat
Subsequence of
Fermat numbers
First terms
3 , 5 , 17 , 257 , 65537
Oeis index
A019434

via Wikipedia infobox

Wikidata facts

Instance of
Lucas sequence
Named after
Pierre de Fermat
Show 2 more facts
maintained by WikiProject
WikiProject Mathematics
Sources (3)

via Wikidata · CC0

~21 min read

Encyclopedic overview

In mathematics, a Fermat number, named after Pierre de Fermat (1601–1665), the first known to have studied them, is a positive integer of the form:

F

Excerpted from Wikipedia’s “Fermat number” article, available under the CC BY-SA 4.0 licence.