The book is now available! 124
(another Prime Pages' Curiosity)
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124 = sigma(1!*2!*4!). Note that 124 is the smallest multi-digit number with this property. [Firoozbakht]

 

  Submitted: 2004-09-02 11:20:17;   Last Modified: 2008-01-30 11:28:00.



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