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A192140 Palindromic numbers m such that their concatenation of prime divisors are also palindromic numbers. 4

%I #6 Mar 30 2012 19:00:25

%S 2,3,4,5,7,8,9,11,101,121,131,151,181,191,313,343,353,373,383,727,747,

%T 757,787,797,919,929,1331,10001,10201,10301,10501,10601,11311,11411,

%U 12421,12721,12821,13331,13831

%N Palindromic numbers m such that their concatenation of prime divisors are also palindromic numbers.

%C The corresponding values of palindromic concatenation in A192141.

%C Superset of A002385 (palindromic primes) and A084092 (prime power decimal palindromes).

%C Subset of A002113 (palindromic numbers) and A192137.

%e Concatenation of prime divisors of number 747 = 3^2 * 83 is 383 (palindromic number).

%Y Cf. A002113, A002385, A084317, A084092, A192137, A192138, A192139, A192141.

%K nonn,base

%O 1,1

%A _Jaroslav Krizek_, Jun 24 2011

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Last modified April 24 08:28 EDT 2024. Contains 371927 sequences. (Running on oeis4.)