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A277350
Positive integers n such that 5^n == 6 (mod n).
8
1, 15853, 5520343, 111966563, 2232207889, 5551501871
OFFSET
1,2
COMMENTS
No other terms below 10^15. - Max Alekseyev, Oct 18 2016
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: A265669 A356866 A184612 * A101320 A031811 A234318
KEYWORD
nonn,hard,more
AUTHOR
Seiichi Manyama, Oct 10 2016
STATUS
approved