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                                                             1428 5715714285
7142856999 9999857142 8571428585 7142857142 8557142855 7142857142 8572857143
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The smallest (and only known) unique prime [reciprocal has period 294] to contain the digits 2 and 4.

 

  Submitted: 2004-08-10 20:01:47;   Last Modified: 2008-01-30 11:28:00.



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