I was looking at our site statistics but I was surprised with the result. Its says: --- There are *1,542,401* total pages in the database. This includes "talk" pages, pages about Wikology, minimal "stub" pages, redirects, and others that probably don't qualify as content pages. Excluding those, there are * 18,446,744,073,709,551,615* pages that are probably legitimate content pages. There have been a total of *26,075* page views, and *592* page edits since the wiki was setup. That comes to *0.00* average edits per page, and *44.05*views per edit. --- The total pages is quite accurate but I wonder where *18,446,744,073,709,551,615 *came? I tried to look at the codes and google but i cant find any explanation of such huge number. Can anyone tell me?