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 A323028 Numbers k such that 375*2^k+1 is prime. 1
 1, 3, 6, 8, 10, 13, 14, 16, 17, 21, 22, 26, 30, 32, 33, 39, 49, 53, 152, 162, 181, 233, 328, 576, 629, 666, 824, 850, 919, 1131, 1738, 1782, 1957, 1983, 2601, 2643, 2729, 2784, 2817, 2973, 3226, 3478, 3759, 5479, 6642, 10889, 12869, 15926, 16718, 18022 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Jeppe Stig Nielsen, Table of n, a(n) for n = 1..83 (terms n = 1..81 from Robert Price) 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(375*2^k+1), [\$1..1000]); # Muniru A Asiru, Jan 02 2019 MATHEMATICA Select[Range[1000], PrimeQ[375*2^# + 1] &] (* Robert Price, Jan 02 2019 *) CROSSREFS Sequence in context: A180398 A128420 A099135 * A189471 A169863 A304500 Adjacent sequences: A323025 A323026 A323027 * A323029 A323030 A323031 KEYWORD nonn,hard AUTHOR Robert Price, Jan 02 2019 STATUS approved

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Last modified September 15 02:25 EDT 2024. Contains 375929 sequences. (Running on oeis4.)