The book is now available! 13666666666666631
(another Prime Pages' Curiosity)
Prime Curios!
Curios: Curios Search:
 

Participate:
Share
                                                          1366666 6666666631
+ A palindromic prime with 13 6s between 13 and 31. Note that 13 and 31 are emirps. [Necula]




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