The book is now available! 6666666
(another Prime Pages' Curiosity)
Prime Curios!
Curios: Curios Search:
 

Participate:
Share
Single Curio View:   (Seek other curios for this number)

 

The only 7-digit repdigit number such that the product of itself and all truncations of itself plus one is prime, i.e., 6666666*666666*66666*6666*666*66*6+1 is prime. [Loungrides]

 

  Submitted: 2015-02-11 06:27:34;   Last Modified: 2015-02-11 06:32:22.



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