Shakuntala Devi
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Who was Shakuntala Devi?
J.P.Bohre, NCERT- Contribution of Indian Mathematicians
(1) She was born in 1939.She is an Indian calculating prodigy.
(2) By age 6,She demonstrated her calculation and memorization abilities at university of Mysore. At the age of 8,she had successes at Annamalai University by doing the same.
(3) On June 18, 1980,She demonstrated the multiplication of two 13‐digit numbers 7,686,369,774,870X2,465,099.745,779 picked at random by the Computer Department of Imperial College, London. She answered the question in 28 seconds. However,the time is more likely the time for dictating the answer (a 26‐digit number) than the time for mental calculation(the time of 28 seconds was quoted on her website).Her answer was 18,947,668,177,995,426,773,730.This event is mentioned on page 26 of the 1995 Guinness Book of Records.
(4) In Dallas, she competed with a computer to see who give the cube of 188138517 faster, she won. At University of USA she was asked to give the 23rd root of
91674867692003915809866092758538016248310668014430862240712651642793465 70408670965932792057674808067900227830163549248523803357453169351119035 9657754734007568818688305620821016129132845564895780158806771.
She answered in 50 seconds. The answer is 546372891.It took a UNIVAC 1108 computer, full one minute (10 seconds more) to confirm that she was right after it was fed with 13000 instructions.
(5) Now she is known to be Human Computer.
