The book is now available! 19482811
(just those submitted by Gaydos)
Prime Curios!
Curios: Curios Search:
 

Participate:
Share

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

+ The smallest integer that produces six prime numbers when the digits of itself, its square, and its cube are written in both ascending and descending orders. It's also a prime number itself. [Gaydos]




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