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A125000
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Integers n such that 2^n == 19 (mod n).
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8
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1, 17, 2873, 10081, 3345113, 420048673, 449349533, 2961432773, 19723772249, 821451792317, 1207046362769
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OFFSET
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1,2
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COMMENTS
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No other terms below 10^15. Some larger terms: 500796684074966733196301. - Max Alekseyev, May 23 2012
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LINKS
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Table of n, a(n) for n=1..11.
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MATHEMATICA
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m = 19; Join[Select[Range[m], Divisible[2^# - m, #] &],
Select[Range[m + 1, 10^6], PowerMod[2, #, #] == m &]] (* Robert Price, Oct 08 2018 *)
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CROSSREFS
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Cf. A124974, A033981, A050259, A124977, A124965, A015911, A015910.
Sequence in context: A092814 A198594 A138199 * A228195 A032909 A239165
Adjacent sequences: A124997 A124998 A124999 * A125001 A125002 A125003
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KEYWORD
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nonn,more
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AUTHOR
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Zak Seidov, Nov 15 2006
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EXTENSIONS
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Terms 1, 17 prepended by Max Alekseyev, May 20 2011
a(8)-a(11) from Max Alekseyev, May 23 2012
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STATUS
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approved
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