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%I #4 Mar 30 2012 17:26:28
%S 3,5,7,13,19,37,73,109
%N Prime divisors of 2^36-1.
%C Prime terms of A003543 (Divisors of 2^36 - 1).
%t Select[Divisors[2^36-1],PrimeQ]
%t (*or*)#[[1]]&/@FactorInteger[2^36-1]
%Y A003543
%K fini,full,nonn,easy
%O 1,1
%A _Zak Seidov_, Jan 14 2009