For those who know what Page Rank, as well as understand its importance for the site, is pleased to offer to see the formula for calculating this indicator. Also for simplicity, also, a table showing how many sites linking and PR which is necessary for the desired result.
So the formula itself to accurately calculate the PR: Where:
d – damping factor – that is to say the proportion of PR, which is given to the link (usually amounts to 0.85) n – number of referrers to the resource in question. Pages subject to filtering is not taken into account;
Ti – i-th referrer;
C – number of incoming (external) links on the page are donor. In order to more user-friendly, we introduced the concept
TLPR – ToolBar PageRank. The value TLPR present themselves in the form of a range of 0 to 10.
TLPR = Log base (PR) *
a Where: base – the base of the logarithm, and it depends on the number of pages indexed by google.Typically, the value is equal to 7;
a – coefficient ranging from 0 to 1. To simplify the calculation can advance to take the value of one.
Below you can see a handy chart for calculating PR, Note: The table is relevant to the page that has no more than ten members (external) links:
| PR | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| 1 | 101 | 19 | 4 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 2 | 555 | 101 | 19 | 4 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 3 | 3,055 | 555 | 101 | 19 | 4 | 1 | 1 | 1 | 1 | 1 | 1 |
| 4 | 16,803 | 3,055 | 555 | 101 | 19 | 4 | 1 | 1 | 1 | 1 | 1 |
| 5 | 92.414 | 16,803 | 3055 | 555 | 101 | 19 | 4 | 1 | 1 | 1 | 1 |
| 6 | 508.277 | 92.414 | 16,803 | 3,055 | 555 | 101 | 19 | 4 | 1 | 1 | 1 |
| 7 | 2,795,522 | 508.277 | 92.414 | 16,803 | 3,055 | 555 | 101 | 19 | 4 | 1 | 1 |
| 8 | 15,375,379 | 2,795,522 | 508.277 | 92.414 | 16,803 | 3,055 | 555 | 101 | 19 | 4 | 1 |
| 9 | 84,564,584 | 15,375,379 | 2,795,522 | 508.277 | 92.414 | 16,803 | 3,055 | 555 | 101 | 19 | 4 |
| 10 | 449,527,525 | 84,564,584 | 15,375,379 | 2,795,522 | 508.277 | 92.414 | 16,803 | 3,055 | 555 | 101 | 19 |
Use the table is very simple: in the first column, select the desired PR eg 4 then look how many sites and with what “PR” must refer to your life, consider sites with a PageRank of 0, in the end we get 16803 references. Let me remind you that the links do not have to be from other sites, it may well be an article or other content located on your resource.
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