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A053366
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Numbers k such that 299*2^k + 1 is prime.
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0
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1, 3, 7, 9, 45, 57, 73, 79, 81, 91, 141, 177, 193, 241, 267, 493, 777, 921, 1167, 1179, 1191, 1689, 2389, 4635, 5377, 9487, 13573, 15781, 26017, 31977, 40455, 59487, 64417, 70441, 85263, 366103, 1692271, 2070979
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OFFSET
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1,2
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LINKS
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MATHEMATICA
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Select[Range[5*10^3], PrimeQ[299*2^# + 1] &] (* G. C. Greubel, May 25 2018 *)
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PROG
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(Magma) [n: n in [1..3000] | IsPrime(299*2^n+1)]; // G. C. Greubel, May 25 2018
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CROSSREFS
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KEYWORD
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hard,nonn,more
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AUTHOR
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EXTENSIONS
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a(36)-a(37) from the Ray Ballinger and Wilfrid Keller link by Robert Price, Dec 22 2018
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STATUS
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approved
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