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
Joe Root (Pennsylvania) Joe Root (Pennsylvania) Joseph Root (1860 – 29 October 1912) was a well-known hermit who lived in what is now Presque Isle State Park in Pennsylvania. Born in Erie, Pennsylvania, Root lived on Presque Isle without any modern conveniences. Root moved away from his childhood home to Presque Isle while still in his adolescent years. As one of the first permanent inhabitants to the peninsula (Presque Isle wasn't declared an official state park until 1921), he built a number of shacks in various parts of the peninsula to suit the particular activity of any given day. There was also a