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Reverse Rigor II (Posted on 2014-07-22) Difficulty: 3 of 5
Denote by R(N) the integer obtained by reversing the digits of a positive integer N.

Determine the largest integer that is certain to divide N4 - (R(N))4, with N > R(N), regardless of the choice of N.

No Solution Yet Submitted by K Sengupta    
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  Subject Author Date
Solutionre(2): possible computer solutionCharlie2014-07-22 13:43:14
Some Thoughtsre: possible computer solutionAdy TZIDON2014-07-22 12:09:02
solutionAdy TZIDON2014-07-22 12:00:14
Some Thoughtspossible computer solutionCharlie2014-07-22 11:58:31
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