Google Index Pages

How google index pages.
Plz let me know what are the factors depend to index a website.

 

For fast indexing your web pages must have quality/unique content. Quality back links also help in fast indexing

 

Backlinks help a lot in fast indexing.. Also pinging your backlinks give you extra advantage

 

External Links are the major factor of fast indexing

 

Thanks for your replies, But i want the exact answer of http://forums.digitalpoint.com/showthread.php?t=1882437 question, i have submitted sitemap to google, we have internal link but number of index pages are not fixed. why?
It goes max 35000 and then it become eliminate after few days and goes 24000 min.
This process repeats again after few days.
What to do?

 

Backlinks are most important for getting indexed soon. Originality of content is also a major factor.

 

backlinks plays vital role in indexing so try to get some quality backlinks

 

get backlinks but from quality sites only

 

Thanks for your replies.