A178005 - OEIS

%I #5 Mar 31 2012 10:26:16

%S 7,97,977,7877,97777,787777,7877777,77767777,787777777,8777777777,

%T 79777777777,777777779777,7877777777777,77777779777777,

%U 778777777777777,8777777777777777,77797777777777777,797777777777777777

%N Largest n-digit prime with the most digits equal to 7.

%C Select first for the most 7's, then take the largest.

%Y Cf. A037067, A105977

%K nonn,base

%O 1,1

%A _Lekraj Beedassy_, May 17 2010