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%I #6 Jan 29 2020 23:23:12
%S 1,8,20,25,67,77,85,137,244,392,540,604,605,650,991,1054,1122,1132,
%T 1158,1231,1303,1481,1502,2474,2820,3250,3376,3499,3537,4000,4145,
%U 4409,4431,4766,7292,7321,9853,10225,11374,15242,18724,23755
%N Numbers j such that (3^j)*(47#) -1 is prime.
%C All primes certified using PFGW from Primeform group.
%K nonn
%O 1,2
%A _Pierre CAMI_, Sep 05 2005
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