Here is a chart that approximately shows how many links are needed
to achieve a certain PR from pages with a particular PR. This chart
assumes 50 out bound links on each page, 85% of the median PR is passed
to the next page and the log scale magic number is 5.5.
| PR of page |
Low Value |
High Value |
Median passed |
Links for PR4 |
Links for PR5 |
Links for PR6 |
Links for PR7 |
Links for PR8 |
Links for PR9 |
| |
|
|
|
|
|
|
|
|
|
1 |
6 |
29 |
0.30 |
3,055 |
16,803 |
92,414 |
508,277 |
2,795,522 |
15,375,371 |
| 2 |
30 |
165 |
2 |
555 |
3,055 |
16,803 |
92,414 |
508,277 |
2,795,522 |
| 3 |
166 |
914 |
9 |
101 |
555 |
3,055 |
16,803 |
92,414 |
508,277 |
| 4 |
915 |
5,032 |
50 |
18 |
101 |
555 |
3,055 |
16,803 |
92,414 |
| 5 |
5,033 |
27,680 |
274 |
3 |
18 |
101 |
555 |
3,055 |
16,803 |
| 6 |
27,681 |
152,243 |
1,507 |
0.61 |
3 |
18 |
101 |
555 |
3,055 |
| 7 |
152,244 |
837,338 |
8,291 |
0.11 |
0.61 |
3 |
18 |
101 |
555 |
| 8 |
837,339 |
4,605,366 |
45,601 |
0.02 |
0.11 |
0.61 |
3 |
18 |
101 |
| 9 |
4,605,367 |
25,329,515 |
250,807 |
0.00 |
0.02 |
0.11 |
0.61 |
3 |
18 |
| 10 |
25,329,516 |
139,312,338 |
1,379,440 |
0.00 |
0.00 |
0.02 |
0.11 |
0.61 |
3 |
From the chart you can see that if you want to achieve a PR of
5 you need 18 PR5 pages linking to you, 3 PR6's or just one PR7.
This of course is just an approximation. If the page has 30 links
instead of 50, more PR would be passed and less links are needed
to achieve the same PR.
PR that you see on the Google
toolbar is a function of the actual value so it can be viewed
on a scale from 0-10. Magic Number^PR (from toolbar)=Full PR value.
A magic number of 5.5 is a well excepted value and is thought to
vary with each PR update, but is generally thought to stay in the
range of 5.25 to 6.0. |