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Search: id:A032380
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A032380 Numbers n such that 61*2^n + 1 is prime. +0
1
4, 12, 48, 88, 168, 3328 (list; graph; listen)
OFFSET

1,1

LINKS

Ray Ballinger, Proth Search Page

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: A035310 A022016 A151441 this_sequence A057346 A081620 A149376

Adjacent sequences: A032377 A032378 A032379 this_sequence A032381 A032382 A032383

KEYWORD

nonn,hard

AUTHOR

Jim Buddenhagen (jbuddenh(AT)gmail.com)

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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