A Math Genius

What's the most complex math calculation that you can do in your head in oh, 11.8 seconds? How about finding the 13^th root of a 100 digit number? Fortunately for the human race, there is one 38 year old who can find the 13^th root of a 100 digit number in 11.8 seconds. Guess you'll see that in the Guiness World Book of Records. Actually, you won't -- read the article to see why.