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A050565
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Numbers k such that 79*2^k-1 is prime.
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0
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1, 3, 7, 15, 43, 57, 61, 75, 145, 217, 247, 2803, 3403, 4375, 5113, 9883, 14565, 17397, 65977, 82081, 92517, 214453, 248055, 369535, 969795
(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[79*2^# - 1] & ] (* Robert Price, Dec 22 2018 *)
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PROG
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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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More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 02 2008
a(25) from the Wilfrid Keller link by Robert Price, Dec 22 2018
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STATUS
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approved
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