The book is now available! 140
(another Prime Pages' Curiosity)
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The largest prime factor of 140 is 7. Note that 12 + 22 + 32 + 42 + 52 + 62 + 72 = 140. [Cramer]

 

  Submitted: 2001-04-09 20:25:28;   Last Modified: 2008-01-30 11:28:00.



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