9
(another Prime Pages' Curiosity)
Prime Curios!
Curios: Curios Search:
 
Participate:
Single Curio View:   (Seek other curios for this number)

 

100000^9 - 9 and 100000^9 + 9 are primes. Note that 9 is the only known number with this property. [Firoozbakht]

 

  Submitted: 2004-08-25 01:20:06;   Last Modified: 2008-01-30 11:28:00.



Prime Curios! © 1999-2009 (all rights reserved)