The book is now available! 13361
(another Prime Pages' Curiosity)
Prime Curios!
Curios: Curios Search:
 

Participate:
Share
+ Five more semiprimes can be consecutively formed from 13361 by iterating the process described in A227942. Found by Charles R. Greathouse IV. Can you find a chain of greater length?




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