Hi,

Weve noticed that in our 2013 SharePoint farms the search results has an unexpected results count discrepancy.

If you look at the bottom of the search results page youll see a count of the number of results for whatever you searched for but as you step through the search result pages that count keeps changing to different numbers.

Please help me understand this issue and pointers to resolve this.

The count returned for search results is not an accurate number. That is why it says "About 410 results". Every time you change pages, the query is executed and SharePoint takes another guess at how many results are found, even though the query has not changed.

While I don't have a specific answer to what causes the deviation (which seems pretty extreme in this case), my guess is that it may depend on server load, caching, possibly changes in the index (continuous crawl).