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Search: id:A032394
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A032394 Numbers n such that 89*2^n+1 is prime. +0
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1, 7, 9, 21, 37, 61, 589, 711, 1537, 1921, 3217, 4237, 26721, 31297, 58101, 155251 (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

Y. Gallot, Proth.exe: Windows Program for Finding Large Primes

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: A125968 A147068 A147012 this_sequence A063486 A070423 A018882

Adjacent sequences: A032391 A032392 A032393 this_sequence A032395 A032396 A032397

KEYWORD

nonn

AUTHOR

Jim Buddenhagen (jbuddenh(AT)gmail.com)

EXTENSIONS

More terms from Hugo Pfoertner (hugo(AT)pfoertner.org), Jun 20 2003

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Last modified December 10 00:48 EST 2009. Contains 170565 sequences.


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