The book is now available! 131681894401
(another Prime Pages' Curiosity)
Prime Curios!
Curios: Curios Search:
 

Participate:
Share/Bookmark
                                                               13 1681894401
+ 131681894401 = (9!)2 + 1 is prime. [Dobb]



Prime Curios! © 1999-2010 (all rights reserved)