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A033982
Integers n such that 2^n == 11 (mod n).
14
1, 3, 262279, 143823239, 382114303, 1223853491, 381541784791, 556985326431, 6236258437049, 98828020264153
OFFSET
1,2
COMMENTS
894157816841269897394424491194255510200782699 belongs to this sequence. [From Max Alekseyev]
MATHEMATICA
m = 11; Join[Select[Range[m], Divisible[2^# - m, #] &],
Select[Range[m + 1, 10^3], PowerMod[2, #, #] == m &]] (* Robert Price, Oct 08 2018 *)
KEYWORD
nonn,more
AUTHOR
Joe K. Crump (joecr(AT)carolina.rr.com)
EXTENSIONS
Edited by N. J. A. Sloane, Jul 03 2008 at the suggestion of R. J. Mathar
Terms 1, 3 prepended by Max Alekseyev, May 18 2011
a(9), a(10) from Max Alekseyev, Jul 30 2011
STATUS
approved