%I #5 Dec 05 2013 19:56:38

%S 5,7,43,769,1123,52631,1428571,2127659,14925373,769230769,5882352941,

%T 6369426751,588235294117,319488817891,9345794392523,24449877750611,

%U 662251655629139,1293661060802069,67114093959731543,244498777506112469

%N Primes arising in A090519, or 0 if A090519(n)= 0.

%C Conjecture: No term is zero.

%o (PARI) A090520(n)={ local(p,tenn) ; p=2 ; tenn=10^n ; while(tenn/p>=2, if( isprime(floor(tenn/p)), return(floor(tenn/p)) ) ; p=nextprime(p+1) ; ) ; return(0) ; } { for(n=1,40, print1(A090520(n),",") ; ) } - _R. J. Mathar_, Nov 19 2006

%Y Cf. A090517, A090518, A090519.

%K base,nonn

%O 1,1

%A _Amarnath Murthy_, Dec 07 2003

%E Corrected and extended by _R. J. Mathar_, Nov 19 2006