The book is now available! 444
(another Prime Pages' Curiosity)
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444 = prime(4+4+4)*(4+4+4). It is the only repdigit number with this property. [Firoozbakht]

 

  Submitted: 2009-11-17 21:16:02;   Last Modified: 2009-11-17 22:46:54.



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