The book is now available! 139149151157
(just those submitted by Mortreuil)
Prime Curios!
Curios: Curios Search:

                                                               13 9149151157

Just showing those entries submitted by 'Mortreuil': (Click here to show all)

+ The smallest 12-digit prime formed by the concatenation of four successive primes (139, 149, 151, 157). Note its mirror (751151941931) and backward order (157151149139) are also prime. [Mortreuil]

Prime Curios! © 2000-2018 (all rights reserved)  privacy statement