A277628 Positive integers n such that 3^n == 6 (mod n).

1, 3, 21, 936340943, 10460353197, 9374251222371, 23326283250291, 615790788171551

Offset: 1

Author

Dmitry Ezhov, Oct 24 2016

Keywords

• nonn
• more

Comments

No other terms below 10^15. - Max Alekseyev, Sep 12 2017

Crossrefs

Solutions to 3^n == k (mod n): A277340 (k=-11), A277289 (k=-7), A277288 (k=-5), A015973 (k=-2), A015949 (k=-1), A067945 (k=1), A276671 (k=2), A276740 (k=5), this sequence (k=6), A277126 (k=7), A277630 (k=8), A277274 (k=11).

Programs

PARI

isok(n) = Mod(3, n)^n == Mod(6, n);

Extensions

a(6)-a(8) from Max Alekseyev, Sep 12 2017