

A323005


Numbers k such that 361*2^k+1 is prime.


0



28, 36, 100, 312, 568, 2584, 9144, 37284, 96720, 105132, 147084, 222292, 280728, 292600, 1459308, 2312832, 2424232
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OFFSET

1,1


LINKS

Table of n, a(n) for n=1..17.
Ray Ballinger, Proth Search Page
Ray Ballinger and Wilfrid Keller, List of primes k.2^n + 1 for 300 < k < 600
Y. Gallot, Proth.exe: Windows Program for Finding Large Primes
Wilfrid Keller, List of primes k.2^n  1 for k < 300
Eric Weisstein's World of Mathematics, Proth Prime
Index entries for sequences of n such that k*2^n1 (or k*2^n+1) is prime


MATHEMATICA

Select[Range[1000], PrimeQ[361*2^# + 1] &] (* Robert Price, Jan 01 2019 *)


CROSSREFS

Sequence in context: A048023 A105710 A192226 * A080983 A179105 A096430
Adjacent sequences: A323002 A323003 A323004 * A323006 A323007 A323008


KEYWORD

nonn,more,hard


AUTHOR

Robert Price, Jan 01 2019


EXTENSIONS

a(16)a(17) from Jeppe Stig Nielsen, Jan 04 2020


STATUS

approved



