The book is now available! 117116115114112111
(another Prime Pages' Curiosity)
Prime Curios!
Curios: Curios Search:
 

Participate:
Share
                                                         11711611 5114112111
+ The smallest prime formed from reverse concatenation of six consecutive composite numbers. [Gupta]




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