View Single Post
  #40  
Old 08-28-2016, 11:12 AM
The Great Unwashed The Great Unwashed is offline
Guest
 
Join Date: Mar 2002
Location: France
Posts: 2,081
Quote:
Originally Posted by Indistinguishable View Post

The challenge to you (after you are able to actually try out enough examples to assure yourself this does indeed work) is to explain: why does this work?

Isn't it perfectly obvious that (8221^((A(1+4995A+16616700A^2))mod1000)/2)-1)mod1000 = A ?


No. Please save me.