

A192140


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


4



2, 3, 4, 5, 7, 8, 9, 11, 101, 121, 131, 151, 181, 191, 313, 343, 353, 373, 383, 727, 747, 757, 787, 797, 919, 929, 1331, 10001, 10201, 10301, 10501, 10601, 11311, 11411, 12421, 12721, 12821, 13331, 13831
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OFFSET

1,1


COMMENTS

The corresponding values of palindromic concatenation in A192141.
Superset of A002385 (palindromic primes) and A084092 (prime power decimal palindromes).
Subset of A002113 (palindromic numbers) and A192137.


LINKS

Table of n, a(n) for n=1..39.


EXAMPLE

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


CROSSREFS

Cf. A002113, A002385, A084317, A084092, A192137, A192138, A192139, A192141.
Sequence in context: A098776 A098897 A265641 * A084092 A288927 A086753
Adjacent sequences: A192137 A192138 A192139 * A192141 A192142 A192143


KEYWORD

nonn,base


AUTHOR

Jaroslav Krizek, Jun 24 2011


STATUS

approved



