• strange definition of palindromic numbers

I would like to give some feedback about ...

From: http://www.checkio.org/mission/prime-palindrome-golf/solve/


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According to Wikipedia (http://en.wikipedia.org/wiki/Palindromic_number), a palindromic number is a number which can be read in both direction. Among palindromic numbers, there are 2-digits numbers whose both digits are the same like 22 or 55 e.g.

Why the expected result for golf(13) is 101 rather than 22 ? I could call it a bug ^^