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 A277350 Positive integers n such that 5^n == 6 (mod n). 8
 1, 15853, 5520343, 111966563, 2232207889, 5551501871 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS No other terms below 10^15. - Max Alekseyev, Oct 18 2016 LINKS PROG (PARI) isok(n) = Mod(5, n)^n == 6; \\ Michel Marcus, Oct 10 2016 CROSSREFS Cf. Solutions to 5^n == k (mod n): A277348 (k=-6), A015891 (k=-5), A123047 (k=-4), A123052 (k=-3), A123062 (k=-2), A015951 (k=-1), A067946 (k=1), A124246 (k=2), A123061 (k=3), A125949 (k=4), A123091 (k=5), this sequence (k=6). Sequence in context: A063847 A265669 A184612 * A101320 A031811 A234318 Adjacent sequences:  A277347 A277348 A277349 * A277351 A277352 A277353 KEYWORD nonn,hard,more AUTHOR Seiichi Manyama, Oct 10 2016 STATUS approved

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Last modified April 14 10:14 EDT 2021. Contains 342949 sequences. (Running on oeis4.)