The book is now available! 31131...13113 (31-digits)
(another Prime Pages' Curiosity)
Prime Curios!
Curios: Curios Search:

                                          3 1131131131 1311311311 3113113113
+ A palindromic prime of prime length with prime digital sum that also has the property that each substring of adjacent digits of length 2 or 3 is also prime. [Patterson]

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