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0000000000 0000999999 9999999900 0000000000 0099999999 9999990000 0000000001
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Phi(196, 10) = Phi(7, -10^14) is the unique prime whose reciprocal has period 196 and is the largest known unique prime that is also an emirp (as of October 2010). [Chandler]

 

  Submitted: 2010-10-12 10:56:48;   Last Modified: 2010-11-26 13:49:01.



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