The book is now available! 68
(another Prime Pages' Curiosity)
Prime Curios!
Curios: Curios Search:

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


68 is the smallest composite number that becomes prime by turning it upside down. [Honaker]


  Submitted: 1999-09-02 18:40:00;   Last Modified: 2008-01-30 11:28:00.

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