The book is now available! 181
(just those submitted by Fougeron)
Prime Curios!
Curios: Curios Search:


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

+ The 181-digit palindromic number made up of all 7's except for the center nut being 181 (7777...7718177...77777) is a palindromic prime with a palindromic prime decimal length. [Fougeron]

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