The book is now available! 12422153
(just those submitted by Rivera)
Prime Curios!
Curios: Curios Search:


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

+ Replacing each digit d with d copies of the digit d produces another prime throughout three transformations. Confirmed by P. Jobling to be the smallest prime of this type. [Rivera]

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