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The 23rd and only 7-digit palindromic prime of which the sum (17) and the product + 1 (433) of the digits are prime. Note that it ends in 23 and that all the digits are prime. [Kik]

 

  Submitted: 2004-02-08 06:14:10;   Last Modified: 2008-01-30 11:28:00.



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