A126716 - OEIS

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A126716

Least i such that p(i)*2^(10^n) -1 is prime.

2, 3, 51, 657, 6255 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,1`
	EXAMPLE	`32^(10^0)-1=5 prime so i(0)=2` `32^(10^1)-1=3071=3783 composite` `52^(10^1)-1=5119 prime so i(1)=3`
	CROSSREFS	`Sequence in context: A113700 A065646 A090508 * A193332 A192182 A090231` `Adjacent sequences: A126713 A126714 A126715 * A126717 A126718 A126719`
	KEYWORD	`nonn`
	AUTHOR	`Pierre CAMI (pierre-cami(AT)bbox.fr), Feb 13 2007`

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Last modified February 15 21:56 EST 2012. Contains 205860 sequences.