The book is now available! 99
(another Prime Pages' Curiosity)
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99 = pi( prime(9)*prime(9) ). Note that 99 is the only two-digit number with this property. [Firoozbakht]

 

  Submitted: 2004-10-29 10:12:22;   Last Modified: 2008-01-30 11:28:00.



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