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The smallest near-repdigit emirp with only prime digits that remains a near-repdigit emirp when each digit is replaced by its binary representation: 111011111111. Note that its substring 233 is the smallest near-repdigit prime with only prime digits that remains a near-repdigit prime when each digit is replaced by its binary representation: 101111. [Beedassy]

 

  Submitted: 2009-11-13 07:47:55;   Last Modified: 2009-11-14 00:50:55.



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