Shakuntala Devi found the 23rd root of a 201-digit number in 50 seconds, beating a UNIVAC 1101 that took 62 seconds
In 1977 at Southern Methodist University, Shakuntala Devi mentally computed the 23rd root of a 201-digit number in 50 seconds; a UNIVAC 1101 at the US Bureau of Standards needed 62 seconds to confirm her answer. Nicknamed the 'Human Computer,' she also set a Guinness record in 1980 by multiplying two random 13-digit numbers in 28 seconds.
