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Primes which do not divide any Repunit R(10^n) = (10^(10^n)-1)/9.
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%I #12 Sep 08 2012 07:49:29

%S 2,3,5,7,13,19,23,29,31,37,43,47,53,59,61,67,71,79,83,89,97,103,107,

%T 109,113,127,131,139,149,151,157,163,167,173,179,181,191,193,197,199,

%U 211,223,227,229,233,239,241,263,269,277,281,283,293,307,311,313,317,331

%N Primes which do not divide any Repunit R(10^n) = (10^(10^n)-1)/9.

%C The primes not in the sequence A178070.

%Y Cf. A178070.

%K nonn

%O 1,1

%A _V. Raman_, Sep 07 2012