Fermat number: Difference between revisions
(Created page with '==Definition== Let <math>n</math> be a nonnegative integer. The <math>n^{th}</math> Fermat number, denoted <math>F_n</math>, is defined as: <math>F_n := 2^{2^n} + 1</math>. If...') |
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===Weaker properties=== | ===Weaker properties=== | ||
* [[Stronger than:: | * [[Stronger than::Proth number]] | ||
==Testing== | ==Testing== | ||
{{oeis|A000215}} | {{oeis|A000215}} | ||
Revision as of 16:07, 20 April 2009
Definition
Let be a nonnegative integer. The Fermat number, denoted , is defined as:
.
If it is prime, it is termed a Fermat prime.
Relation with other properties
Weaker properties
Testing
The ID of the sequence in the Online Encyclopedia of Integer Sequences is A000215