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Search: id:A032419
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| A032419 |
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Numbers n such that 139*2^n + 1 is prime. |
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+0
2
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OFFSET
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1,1
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LINKS
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Ray Ballinger, Proth Search Page
Ray Ballinger & 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
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CROSSREFS
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Cf. A032418.
Cf. A032373, A032420, A032460, A032497.
Sequence in context: A060599 A065868 A144017 this_sequence A130421 A156736 A006266
Adjacent sequences: A032416 A032417 A032418 this_sequence A032420 A032421 A032422
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KEYWORD
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nonn,hard
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AUTHOR
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Jim Buddenhagen (jbuddenh(AT)gmail.com)
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EXTENSIONS
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One more term (from the Ballinger-Keller web page) from M. F. Hasler (Maximilian.Hasler(AT)gmail.com), Apr 18 2007
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