id:A064721 - OEIS Search Results

Search: id:A064721

Displaying 1-1 of 1 results found.

page 1

Potential Sierpinski numbers: integers for which the smallest m > 2^10 in A040076 such that n*2^m+1 is prime (A050921).

+0
1

383, 766, 881, 1532, 1643, 1762, 2897, 3061, 3064, 3286, 3443, 3524, 3829, 4847, 4861, 5297, 5359, 5794, 5897, 6122, 6128, 6319, 6572, 6886, 7013, 7352, 7493, 7651, 7658, 7909, 7957, 8119, 8269, 8423, 8543, 8929, 9323, 9694, 9722 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`The first confirmed Sierpinski number is 78557.`
	MATHEMATICA	`Do[m = 0; While[m <= 2^10 && !PrimeQ[n*2^m + 1], m++ ]; If[m > 2^10, Print[n]], {n, 1, 10^4} ]`
	CROSSREFS	`Cf. A040076, A050921.` `Sequence in context: A015861 A072385 A045122 this_sequence A046014 A046491 A046492` `Adjacent sequences: A064718 A064719 A064720 this_sequence A064722 A064723 A064724`
	KEYWORD	`nonn`
	AUTHOR	`Robert G. Wilson v (rgwv(AT)rgwv.com), Oct 16 2001`

page 1

Search completed in 0.002 seconds

Last modified December 1 13:27 EST 2009. Contains 167806 sequences.

AT&T Labs Research