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A032481 Numbers n such that 209*2^n+1 is prime. +0
1
1, 5, 11, 13, 65, 113, 299, 335, 1235, 1991, 2861, 3295, 3343, 3901, 5545, 9125, 10769, 14303, 19433, 28535, 76855 (list; graph; listen)
OFFSET

1,2

LINKS

Ray Ballinger, Proth Search Page

Ray Ballinger and Wilfrid Keller, List of primes k.2^n + 1 for k < 300

Wilfrid Keller, List of primes k.2^n - 1 for k < 300

Index entries for sequences of n such that k*2^n-1 (or k*2^n+1) is prime

CROSSREFS

Sequence in context: A115091 A034924 A018607 this_sequence A073615 A084864 A102801

Adjacent sequences: A032478 A032479 A032480 this_sequence A032482 A032483 A032484

KEYWORD

nonn,hard

AUTHOR

njas

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.


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