OFFSET
1,1
COMMENTS
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..1000
EXAMPLE
Concatenation of prime divisors of 39 = 3 * 13 is 313 (palindromic number).
MATHEMATICA
Select[Range[2, 500], PalindromeQ[FromDigits[Flatten[IntegerDigits/@ FactorInteger[ #][[All, 1]]]]]&] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Jul 02 2017 *)
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Jaroslav Krizek, Jun 24 2011
STATUS
approved