The book is now available! 12508...40031 (19893-digits)
(just those submitted by Earls)
Prime Curios!
Curios: Curios Search:
 

Participate:
Share

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

+ 17763*2^66066-1 is prime. Note that 66066 is a palindromic triangular number, and that 1^2+7^2+7^2+6^2+3^2 = 6^2+6^2+0^2+6^2+6^2 = 144 = 12^2. [Earls]




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