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The largest emirp formed by concatenating all the known powers n for which 10n equals the product of two distinct numbers free of digit 0: 1, 2, 3, 4, 5, 6, 7, 9, 18, 33. [Beedassy]

 

  Submitted: 2010-04-24 18:26:35;   Last Modified: 2010-04-25 12:11:35.



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