The book is now available! 641
(another Prime Pages' Curiosity)
Prime Curios!
Curios: Curios Search:
 

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

 

Replacing each digit d of 641 with d copies of the digit d produces another prime, i.e., 641 becomes 66666644441, which is also prime. If we apply the same transform using 66666644441, yet another prime is formed. [Honaker]

 

  Submitted: 1999-09-22 20:12:53;   Last Modified: 2009-03-04 19:01:06.



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