The book is now available! 22537...22347 (80-digits)
(another Prime Pages' Curiosity)
Prime Curios!
Curios: Curios Search:
 

Participate:
Share
                                                                  2253721123
2223552133 3322729235 3122222311 2175722333 7219313222 5412374322 1133522347
+ Prime string of consecutive integers from 20 to 47 whereby the composite numbers are replaced by the concatenation of their prime factors (counting multiplicity) {2*2*5}{3*7}...{2*23}{47}. Replacing the composites by the sum of these prime factors yields yet another prime of length 53 or {9}{10}...{25}{47}. [De Geest]




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