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Find out (Posted on 2012-01-08) Difficulty: 3 of 5
How many k-digit palindromes are prime?
Please solve for k=1,2,3, ... 9.

No Solution Yet Submitted by Ady TZIDON    
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  Subject Author Date
re: computer solution--something bad happened at the unasked-for k=11Charlie2012-01-08 13:29:35
Solutioncomputer solutionCharlie2012-01-08 13:16:39
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