750,000 searches

I have searched the forums, this and others, is there a correlation to time and backlinks to dominate a number of searches ie. 6 months 3000 backlinks to page 1? I know it's not exact off course.
Also is there an amount it's not worth fighting against?
I know blackhat methods can target massive markets but what about whitehat?

Bump but I picked 750 000 as elsewhere on this forum it has been said anything below that is relatively easy to rank for

You should be able to rank the first page in a couple of months, if not sooner. You just have to do some good onpage optimization, bookmarking, articles, high PR blogs and you should be good to go.

It also depends on your keyword phrase and competition. In most cases I'ved gotten to the first page of Google within a few weeks with over 1 million searches.

(Just thinking out loud.) Hmm. A mathematical basis for SEO. Is there a formula? It would surely help in scalability planning.