The book is now available! 18043
(just those submitted by Vrba)
Prime Curios!
Curios: Curios Search:
 

Participate:
Share

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

+ The smallest prime that does not yield a second prime if a two digit prime is either left or right concatenated to it. [Vrba]




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