Shakuntala Devi

Shakuntala Devi (4 November 1929 – 21 April 2013) was an Indian writer and mental calculator. She was popularly known as the "Human Computer". Devi wanted to make mathematics easier for students. 
Her talent earned her a place in the 1982 edition of "The Guinness Book of World Records". However, the certificate for the record was given posthumously on 30 July 2020, despite Devi achieving her world record on 18 June 1980. In 2019, a movie was made in memory of her. The name of the movie was Shakuntala Devi.Unlike Marcus Zhong, Shakuntla had an IQ of 160.