id:A122119 - OEIS Search Results

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Least prime factor of 2^(2^n)+5^(2^n).

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7, 29, 641, 17, 97, 193, 274568286337, 257, 211457, 12289 (list; graph; listen)

	OFFSET	`0,1`
	COMMENT	`Cf. A074600 2^n + 5^n, A094475 Primes of form 2^n+5^n.`
	CROSSREFS	`Cf. A074600, A094475.` `Sequence in context: A071918 A120789 A135629 this_sequence A157422 A061644 A053621` `Adjacent sequences: A122116 A122117 A122118 this_sequence A122120 A122121 A122122`
	KEYWORD	`more,nonn`
	AUTHOR	`Zak Seidov (zakseidov(AT)yahoo.com), Oct 19 2006`

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.