The book is now available! 2991
(another Prime Pages' Curiosity)
Prime Curios!
Curios: Curios Search:
 
Participate:
+ Phi(2991) = 1992. [McCranie]

+ The smallest number with two prime factors summing to 1000 -- curiously with three digits the same as the previous number (2491) with prime factors summing to a power of ten.

  To link to this page use http://primes.utm.edu/curios/page.php?number_id=482


Prime Curios! © 1999-2009 (all rights reserved)