13th root 13th root Extracting the 13th root of a number is a famous category for the mental calculation world records. The challenge consists of being given a large number (possibly over 100 digits) and asked to return the number that, when taken to the 13th power, equals the given number. For example, the 13th root of 8,192 is 2 and the 13th root of 96,889,010,407 is 7. Extracting the 13th root has certain properties. One is that the 13th root of a number is much smaller: a 13th root will have approximately 1/13th the number of digits. Thus, the 13th root
Southern Railway 401 Southern Railway 401 Southern Railway 401 is a steam locomotive built in December 1907 by Baldwin Locomotive Works for Southern Railway. It is a 2-8-0 Consolidation of Southern's H-4 class. 401 is one of 25 class H-4 2-8-0 Consolidation Type steam locomotives built by the Baldwin Locomotive Works of Philadelphia, Pennsylvania in November 1907 for the Southern Railroad to haul freight trains. In 1949, #401 was sold to the Alabama Asphaltic Limestone Company in Margerum, Alabama. She switched hopper cars of stone until the company brought in a diesel in 1963, then she was placed on stand-by service in case