The book is now available! 1973
(just those submitted by Caldwell)
Prime Curios!
Curios: Curios Search:
 

Participate:
Share

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

+ The least prime p that becomes composite if we add or subtract any power of 2 less than p/2. (The next few are 3181, 3967, 4889, 8363, 8923, ...) [TT2011]. [Caldwell]




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