Seems longer. I have an old laptop with a working version of 1.something.

“Eleven years ago, Firefox 1.0 was released with much excitement and anticipation. With the help of volunteers, The Mozilla Foundation placed a two-page advertisement in the New York Times. Over the last 11 years, Firefox has been been used by millions of people worldwide, becoming one of the most popular web browsers available to surf the Internet. …”

Source: Opensource-com
“> Happy birthday Firefox!