A032397 - OEIS

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A032397

Numbers k such that 95*2^k+1 is prime.

1

1, 3, 5, 7, 13, 17, 21, 53, 57, 61, 83, 89, 111, 167, 175, 237, 533, 621, 661, 753, 993, 1039, 1849, 1987, 3437, 6189, 6905, 8491, 11285, 18539, 20271, 25225, 30973, 36559, 40937, 54477, 120679, 170545, 231671, 247265, 433321, 622849, 682055, 829421, 891073

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

LINKS

Jeppe Stig Nielsen, Table of n, a(n) for n = 1..54

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(95*2^n+1) \\ Charles R Greathouse IV, Jun 13 2017

CROSSREFS

Sequence in context: A058341 A116036 A304122 * A028879 A067567 A104294

Adjacent sequences: A032394 A032395 A032396 * A032398 A032399 A032400

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

Terms moved from Data to b-file, and more terms added to b-file, by Jeppe Stig Nielsen, Sep 02 2020

STATUS

approved