Windows 2000 build 1841

Windows 2000 build 1947 is a build featured in Windows 2000 - The Daily Cycle (located at https://www.youtube.com/watch?v=DDqODDYR4Xk). It is visible, in small writing, at the bottom of the screenshot. There are also references to builds 1877, 1945, 1946, and 1947, as well as the NT 4.0 RTM in the video.