The book is now available! 261
(another Prime Pages' Curiosity)
Prime Curios!
Curios: Curios Search:
 

Participate:
Share
Single Curio View:   (Seek other curios for this number)

 

The only 3-digit number n in which 2n - n is prime. [Wu]

 

  Submitted: 2002-01-29 10:41:39;   Last Modified: 2008-01-30 11:28:00.



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