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%I #16 Jul 06 2021 02:14:54
%S 1,239,4812,5051,7627,7628,20933,20934,23510,23749,28322,28560,28562,
%T 28800,33373,33612,36188,36189,49494,49495,52071,52310,56883,57121,
%U 57123,57361,61934,62173,64749,64750,78055,78056,80632,80871,85444,85682,85684,85922,90495
%N Numbers k such that k^12 == 1 (mod 13^4).
%H Amiram Eldar, <a href="/A056095/b056095.txt">Table of n, a(n) for n = 1..10000</a>
%t Select[ Range[ 100000 ], PowerMod[ #, 12, 13^4 ]==1& ]
%Y Cf. A056091, A056092, A056094.
%K nonn
%O 1,2
%A _Robert G. Wilson v_, Jun 08 2000