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A032469
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Numbers k such that 185*2^k+1 is a prime.
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0
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3, 21, 497, 707, 933, 963, 1187, 1337, 2633, 2993, 3963, 4947, 5177, 11883, 98627, 235673, 375723, 384747, 681393, 2235003
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OFFSET
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1,1
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LINKS
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MAPLE
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select(k->isprime(185*2^k+1), [$0..1000]); # Muniru A Asiru, Dec 18 2018
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MATHEMATICA
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Select[Range[1000], PrimeQ[185*2^# + 1] & ] (* Robert Price, Dec 18 2018 *)
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CROSSREFS
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KEYWORD
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nonn,hard,more
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AUTHOR
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EXTENSIONS
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a(16)-a(19) from the Ray Ballinger and Wilfrid Keller link by Robert Price, Dec 18 2018
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STATUS
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approved
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