A032396 Numbers k such that 93*2^k+1 is prime.

2, 4, 6, 10, 12, 30, 42, 44, 52, 70, 76, 108, 122, 164, 170, 226, 298, 398, 686, 1020, 1110, 1478, 1646, 2032, 2066, 2800, 2816, 8568, 9678, 11108, 16930, 20917, 24210, 24994, 38288, 61904, 63016, 67722, 89310, 122056, 135908, 155174, 191748, 197778

Offset

1,1

Links

Joerg Arndt, Table of n, a(n) for n = 1..60 (from http://www.prothsearch.com/riesel1.html)

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(93*2^n+1) \\ Charles R Greathouse IV, Jun 07 2017

Crossrefs

Sequence in context: A094960 A357110 A100195 * A271884 A305836 A233349

Adjacent sequences: A032393 A032394 A032395 * A032397 A032398 A032399

Keyword

nonn,hard

Author

James R. Buddenhagen

Extensions

More terms from Hugo Pfoertner, Jun 20 2003

Status

approved