A323032 Numbers k such that 351*2^k+1 is prime.

12, 13, 15, 31, 36, 45, 53, 123, 153, 155, 172, 223, 247, 269, 287, 353, 1416, 2601, 3525, 3833, 4709, 5533, 6091, 6163, 7545, 7879, 10995, 11036, 12361, 12953, 13132, 13252, 19885, 20108, 22891, 28795, 33195, 34213, 39372, 46689, 57273, 62733, 66492, 68291

Offset

1,1

Links

Robert Price, Table of n, a(n) for n = 1..64

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(351*2^k+1), [$1..1000]); # Muniru A Asiru, Jan 02 2019

Mathematica

Select[Range[1000], PrimeQ[351*2^# + 1] &]

Crossrefs

Sequence in context: A242912 A102496 A267615 * A003894 A084622 A155147

Adjacent sequences: A323029 A323030 A323031 * A323033 A323034 A323035

Keyword

nonn,hard

Author

Robert Price, Jan 02 2019

Status

approved