A323027 Numbers k such that 373*2^k+1 is prime.

2, 6, 14, 36, 62, 92, 122, 292, 758, 4436, 5526, 11066, 14076, 17036, 23618, 25412, 33692, 61358, 71018, 92156, 158476, 334026, 641606

Offset

1,1

Links

Table of n, a(n) for n=1..23.

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^n-1 (or k*2^n+1) is prime

Maple

select(k->isprime(373*2^k+1), [$1..1000]); # Muniru A Asiru, Jan 02 2019

Mathematica

Select[Range[1000], PrimeQ[373*2^# + 1] &] (* Robert Price, Jan 02 2019 *)

Crossrefs

Sequence in context: A025257 A283438 A362780 * A110152 A245560 A175654

Adjacent sequences: A323024 A323025 A323026 * A323028 A323029 A323030

Keyword

nonn,more,hard

Author

Robert Price, Jan 02 2019

Status

approved