The book is now available! 20772199
(just those submitted by Rivera)
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We will be updating our hardware on Thursday September 4 at about 9am CDT (2pm GMT).   Submissions will be turned off about one hour before that time.  Downtime should be brief.
Chris K. Caldwell <caldwell@utm.edu>

Just showing those entries submitted by 'Rivera': (Click here to show all)

+ The number 20772199 is the smallest integer with the property that the sum of the prime factors of n and the sum of the prime factors of n+1 are both equal to 666: [Rivera]




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