The book is now available! 10985674123
(just those submitted by Caldwell)
Prime Curios!
Curios: Curios Search:
 

Participate:
Share
                                                                1 0985674123

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

+ It is conjectured that you can always arrange the numbers from 1 to 2n in a circle so that every pair of adjacent numbers adds to a prime. Antonio Filz called this circular permutation a Prime Circle. This prime gives one solution (starting with 10) when n = 5. [Caldwell]




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