The book is now available! 56
(another Prime Pages' Curiosity)
Prime Curios!
Curios: Curios Search:
 

Participate:
Share
Single Curio View:   (Seek other curios for this number)

 

56 = sigma(sigma(sigma(5+6))). 56 is the smallest multidigit number with this property and there is only one other. [Firoozbakht]

 

  Submitted: 2004-09-03 10:39:26;   Last Modified: 2009-05-08 20:59:20.



Prime Curios! © 2000-2017 (all rights reserved)