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 A088286 Primes in A088285. Palindromic primes in which the sum of the internal digits = the sum of the external digits. 2

%I #16 Jul 15 2023 16:01:09

%S 7046407,7136317,7226227,7250527,7324237,701282107,701525107,

%T 701606107,702343207,705121507,712161217,713060317,714040417,

%U 720262027,720343027,721080127,721242127,721404127,722222227,722303227,723121327,723202327

%N Primes in A088285. Palindromic primes in which the sum of the internal digits = the sum of the external digits.

%C All members begin with 7. - _David Wasserman_, Aug 04 2005

%H Chai Wah Wu, <a href="/A088286/b088286.txt">Table of n, a(n) for n = 1..710</a>

%e 7136317 is a prime and 7+7 = 14 = 1+3+6+3+1.

%t Select[Prime[Range[37392000]],With[{id=IntegerDigits[#]},PalindromeQ[ #] && id[[1]]+id[[-1]] == Total[Most[Rest[id]]]]&]//Quiet (* Requires Mathematica version 10 or later *) (* _Harvey P. Dale_, Jun 18 2021 *)

%Y Cf. A088285.

%K base,nonn

%O 1,1

%A _Amarnath Murthy_, Sep 29 2003

%E More terms from _David Wasserman_, Aug 04 2005

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Last modified December 11 09:49 EST 2023. Contains 367722 sequences. (Running on oeis4.)