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1, 3, 5, 7, 17, 29, 31, 89, 135, 229, 257, 305, 493, 781, 811, 1177, 1315, 1709, 2267, 5283, 6109, 7763, 7923, 16481, 18457, 29187, 39487, 53393, 59905, 76267, 109325, 278595, 307745, 547433, 651413, 1072433, 1936025, 2076663
(list;
graph;
refs;
listen;
history;
text;
internal format)
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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[1000], PrimeQ[239*2^# + 1] & ] (* Robert Price, Dec 20 2018 *)
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PROG
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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(30)-a(38) from the Ray Ballinger and Wilfrid Keller link by Robert Price, Dec 20 2018
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STATUS
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approved
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