id:A115377 - OEIS Search Results

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Numbers n such that the first n digits of Sqrt[2] form a prime.

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55, 97, 225, 11260, 11540 (list; graph; listen)

	OFFSET	`1,1`
	LINKS	`Eric Weisstein's World of Mathematics, Pythagoras Prime` `Eric Weisstein's World of Mathematics, Integer Sequence Primes`
	EXAMPLE	`First Pythagorean prime is 1414213562373095048801688724209698078569671875376948073, which has 55 digits`
	CROSSREFS	`Cf. A002193.` `Sequence in context: A063131 A128880 A039596 this_sequence A146145 A044144 A044525` `Adjacent sequences: A115374 A115375 A115376 this_sequence A115378 A115379 A115380`
	KEYWORD	`nonn,base,more`
	AUTHOR	`Eric Weisstein (eric(AT)weisstein.com), Jan 21, 2006`

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.