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The only known prime p such that it and its reversal R(p) are differences of pairs of consecutive cubes, i.e., 19=3^3-2^3 and 91=6^3-5^3. [Loungrides]

 

  Submitted: 2012-07-09 04:45:07;   Last Modified: 2018-02-25 08:52:20.



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