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%I A115997 #6 Jul 15 2021 06:33:28
%S A115997 7,16638,3631421,141521639,3087218304
%N A115997 Numbers k such that the concatenation of k with the k-th prime gives a palindrome.
%e A115997 prime(3087218304)=74038127803 and 308721830474038127803 is a palindrome.
%Y A115997 Cf. A109304, A115996.
%K A115997 nonn,base
%O A115997 1,1
%A A115997 _Giovanni Resta_, Feb 13 2006

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