login
Palindromic primes with digit sum 8.
5

%I #10 Jul 18 2022 18:26:04

%S 10601,11411,30203,31013,1022201,1120211,1300031,3002003,100060001,

%T 103000301,111020111,300020003,300101003,10002220001,10200200201,

%U 10210001201,1000030300001,1021000001201,1030000000301,1101010101011

%N Palindromic primes with digit sum 8.

%H Chai Wah Wu, <a href="/A070249/b070249.txt">Table of n, a(n) for n = 1..1757</a>

%t Do[p = Join[ IntegerDigits[n], Reverse[ Drop[ IntegerDigits[n], -1]]]; q = Plus @@ p; If[ PrimeQ[ FromDigits[p]] && q == 8, Print[ FromDigits[p]]], {n, 1, 10^7}]

%t Select[Prime[Range[1626*10^4]],Total[IntegerDigits[#]]==8&&PalindromeQ[#]&] (* The program generates the first 13 terms of the sequence. *) (* _Harvey P. Dale_, Jul 18 2022 *)

%Y Cf. A002385, A070247 and A070248.

%K base,nonn

%O 1,1

%A _Amarnath Murthy_, May 05 2002

%E Edited by _Robert G. Wilson v_, May 15 2002