Can you find the 23rd root of a 201-digit number? The late Shakuntala Devi, India's arithmetic prodigy, calculated the answer in just 50 seconds (beating a computer).
Numbers Were Her Toys
From the Circus to the Guinness Book of World Records
Meet India's Human Computer
What day did November 20th fall on in the year 1851? Shakuntala Devi knew the answer immediately.
Written by Curiosity Staff January 10, 2017
Wake up with the smartest email in your inbox.
Our Best Articles Daily