The book is now available! 372973
(another Prime Pages' Curiosity)
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sigma(372973) = 3! + 7! + 2! + 9! + 7! + 3!. The prime 372973 is the only number greater than one with this property. [Firoozbakht]

 

  Submitted: 2004-09-23 07:44:45;   Last Modified: 2008-01-30 11:28:00.



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