How Powerfull is a PR 10 Backlink?

For my new project i need to know the optinion of the fourm.

On a Point base PR 1 being 1 point, how much power would you give a PR 2,3,4 etc backlink?
i was thinking about PR n^2
so
PR 1 = 1
PR 2 = 4
PR 3 = 9
PR 4 = 16
PR 5 = 25
PR 6 = 36
PR 7 = 49
PR 8 = 64
PR 9 = 81
PR 10 = 100
But that is propably not enough...
What kind of equation would you suggest?
Any idea is welcome...

 

if you could ever get one i would say PR1=1 PR10= 10,000

 

The PR 10 propably wont be too important for my project
its more about the PR <=6 that will come to use often...

 

So powerful that is normally not possible to get one, unless you have a real big dick. Check the list

http://www.searchenginegenie.com/pagerank-10-sites.htm - 2011

How about a link in whitehouse dot gov front page? huh?

 

If we were saying a PR1 is just a plain blog spammed comment, and the PR10 is a link you paid for on a site, I would say over 100k, but its not like you would ever get one. I got websites with 50k+ indexed links and I'm sure a PR10 would increase the SERPs over double.

 

Last day i found a PR chart, look at this :



But i believe it's not accurate.

 

You need an eigen vector equation, that will do the trick.
http://en.wikipedia.org/wiki/PageRank

Its not power 2 based, nor its logscale based. Its linear, and rescaled from eigen vector.

 

Moreover, a link from PR6 page that has a lot of internal/external links is by far less powerful than link from PR5 page with no internal/external links.