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A032377
Numbers k such that 55*2^k+1 is prime.
0
4, 8, 16, 22, 32, 94, 220, 244, 262, 286, 344, 356, 392, 1996, 2744, 5158, 6964, 13484, 15164, 197350, 300632, 309560, 363892, 673708, 1177924, 1308148, 1669798
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OFFSET
1,1
LINKS
Table of n, a(n) for n=1..27.
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
PROG
(PARI) is(n)=ispseudoprime(55*2^n+1) \\
Charles R Greathouse IV
, Jun 13 2017
CROSSREFS
Sequence in context:
A340298
A053688
A036302
*
A358435
A312823
A133690
Adjacent sequences:
A032374
A032375
A032376
*
A032378
A032379
A032380
KEYWORD
nonn
AUTHOR
James R. Buddenhagen
EXTENSIONS
More terms from
Hugo Pfoertner
, Jun 20 2003
More terms (from http://web.archive.org/web/20161028080239/http://www.prothsearch.net/riesel.html
),
Joerg Arndt
, Apr 07 2013
STATUS
approved
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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)