%I A073715
%S A073715 2,5,29,113,8179,131063,524269,2147483629,2305843009213693921,
%T A073715 618970019642690137449562091,162259276829213363391578010287957,
%U A073715 170141183460469231731687303715884105703
%N A073715 Prime preceding n-th Mersenne-prime. PrevPrime[n-th Mersenne prime]=PrevPrime[A000668].
%F A073715 a(n)=Prime[PrimePi[M(n)]-1]=Prime[PrimePi[A000668(n)]-1]
%Y A073715 Sequence in context: A126107 A083472 A057794 this_sequence A104083 A132282 
               A007014
%Y A073715 Adjacent sequences: A073712 A073713 A073714 this_sequence A073716 A073717 
               A073718
%K A073715 nonn
%O A073715 1,1
%A A073715 Labos E. (labos(AT)ana.sote.hu), Aug 05 2002