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A323038
Numbers k such that 387*2^k+1 is prime.
0
2, 7, 15, 27, 28, 60, 67, 82, 88, 122, 179, 202, 235, 298, 519, 655, 2712, 4132, 5018, 9378, 9688, 17080, 21367, 23127, 61803, 109408, 143095, 143440, 285780, 867355, 1752919, 1930200
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OFFSET
1,1
LINKS
Table of n, a(n) for n=1..32.
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
MATHEMATICA
Select[Range[1000], PrimeQ[387*2^# + 1] &] (*
Robert Price
, Jan 03 2019 *)
CROSSREFS
Sequence in context:
A194112
A005449
A293401
*
A333637
A113422
A061802
Adjacent sequences:
A323035
A323036
A323037
*
A323039
A323040
A323041
KEYWORD
nonn
,
more
,
hard
AUTHOR
Robert Price
, Jan 03 2019
STATUS
approved
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Last modified April 24 05:33 EDT 2024. Contains 371918 sequences. (Running on oeis4.)