The book is now available! 1021
(another Prime Pages' Curiosity)
Prime Curios!
Curios: Curios Search:

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


The only four-digit emirp pair whose reversals each occur on a 12-hour clock is 10:21 and its reversal. [Punches]


  Submitted: 2008-06-24 12:17:32;   Last Modified: 2008-06-26 09:55:29.

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