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A082808 Palindromic primes whose digit permutation yields at least one other palindromic prime. 2

%I #10 Aug 14 2019 14:14:01

%S 101,10301,10501,17971,30103,30703,30803,37273,39293,70207,70507,

%T 71917,73237,79397,93239,97379,1003001,1008001,1028201,1035301,

%U 1043401,1055501,1065601,1074701,1082801,1085801,1093901,1153511

%N Palindromic primes whose digit permutation yields at least one other palindromic prime.

%H Harvey P. Dale, <a href="/A082808/b082808.txt">Table of n, a(n) for n = 1..1000</a>

%e 101 gives 011 = 11, 17971 gives 71917.

%t oppQ[n_]:=Count[FromDigits/@Permutations[IntegerDigits[n]],_?(PrimeQ[#]&&PalindromeQ[#]&)]>1; Select[Prime[Range[100000]],PalindromeQ[#] && ooppQ[ #]&] (* _Harvey P. Dale_, Aug 14 2019 *)

%Y Cf. A082807.

%K base,nonn

%O 1,1

%A _Amarnath Murthy_ and Meenakshi Srikanth (menakan_s(AT)yahoo.com), Apr 20 2003

%E Corrected and extended by _Giovanni Resta_, Feb 07 2006

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Last modified April 20 06:53 EDT 2024. Contains 371799 sequences. (Running on oeis4.)