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A322998 Numbers k such that 385*2^k+1 is prime. 1
8, 10, 14, 16, 36, 62, 76, 88, 114, 138, 258, 278, 338, 416, 538, 590, 736, 1074, 1154, 1262, 1768, 2602, 2820, 3436, 3702, 3970, 4778, 5990, 7598, 8088, 9398, 9628, 13036, 14954, 15112, 16334, 16636, 17958, 22994, 23054, 25130, 30660, 35358, 64560, 78770 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Robert Price, Table of n, a(n) for n = 1..60

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(385*2^k+1), [$1..1000]); # Muniru A Asiru, Jan 03 2019

MATHEMATICA

Select[Range[1000], PrimeQ[385*2^# + 1] &]

CROSSREFS

Sequence in context: A163628 A060864 A087695 * A262708 A134321 A326386

Adjacent sequences:  A322995 A322996 A322997 * A322999 A323000 A323001

KEYWORD

nonn,hard

AUTHOR

Robert Price, Jan 03 2019

STATUS

approved

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Last modified September 20 12:13 EDT 2019. Contains 327231 sequences. (Running on oeis4.)