The book is now available! 880667
(another Prime Pages' Curiosity)
Prime Curios!
Curios: Curios Search:
 

Participate:
Share
+ The smallest prime to be the digital reversal of a product of pairs of amicable numbers. R(2620 * 2924) = R(7660880) = 0880667 = 880667 is prime. [Post]




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