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%I #12 May 30 2020 05:08:18
%S 2,2,11,67,3301,670001,670001,2816573,1962598272385996001,
%T 13135299156148920427,8195631610270280813458231,
%U 252695623634706646276208461875953169850197045066143207,381219345970368698157410442059827141986617742456355454248317851,381219345970368698157410442059827141986617742456355454248317851
%N Beginning with 2, greatest prime divisor of the concatenation of all previous terms.
%e Greatest prime divisor of 22 is 11, 2211 is 67.
%o (PARI) lista(nn) = {my(k=2, m); print1(k); for(n=2, nn, print1(", ", k=vecmax(factor(m=eval(Str(m, k)))[, 1]))); } \\ _Jinyuan Wang_, May 24 2020
%K nonn,base
%O 1,1
%A _Amarnath Murthy_, Jun 10 2004
%E More terms from _Robert Gerbicz_, Jun 09 2007
%E Offset corrected and a(12)-a(13) from _Donovan Johnson_, Feb 19 2011
%E a(14) from _Jinyuan Wang_, May 30 2020
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