The book is now available! 163800
(another Prime Pages' Curiosity)
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163800 = sigma(1!2*6!2*3!2*8!2*3!2*0!2*0!2). Note that 163800 is the smallest multi-digit number with this property. [Firoozbakht]

 

  Submitted: 2004-09-02 11:10:32;   Last Modified: 2008-01-30 11:28:00.



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