September 4, 1998 is the Anniversary of the Incorporation of Google (taken from the google website, so it must be true.)
Larry Page met Sergey Brin at Stanford, in 1995. By 1996, Larry and Sergey, now Stanford computer science grad students, began collaborating on a search engine called BackRub. BackRub operated on the Stanford servers for more than a year—eventually taking up too much bandwidth to suit the university.
In 1997, Larry and Sergey decided that the BackRub search engine needed a new name. They went with Google, a play on the word “googol,” a mathematical term for the number represented by the numbber 1 followed by 100 zeros. The use of the term reflected their mission to organize a seemingly infinite amount of information on the web.
In August of 1998, Andy Bechtolsheim wrote a check for $100,000 to an entity that didn’t exist yet: a company called Google Inc. Google filed for incorporation on September 4, 1998. Shortly thereafter, Larry and Sergey opened a bank account in the newly-established company’s name and deposited Bechtolsheim’s check.
According to MarketWatch in January 2020 Google and its parent company, Alphabet, became the third U.S. company to be valued at 1 trillion dollars, after Apple and Microsoft.