human computer (10. 817)

Despite a posthumous and four-decade late official acknowledgement by the world records authority, Shakuntala Devi (ಶಕುಂತಲಾ ದೇವಿ), nonetheless a celebrated author, mental calculator, political opponent to Indira Ganhdi in parliamentary elections after her prime-ministership and astrologer—without any formal education (though born into the Brahmin caste her father was a circus performer, a trapeze artist and lion tamer before taking his prodigious daughter on tour), achieved her record setting calculation on this day in 1980 at Imperial College, London, multiplying two randomly-generated thirteen digit numbers in under half-a-minute, rivalling the processing times of contemporary computers. In addition to authoring several books on arithmetic to teach people some of her methods for simplifying and intuiting solutions, including Figuring: The Joy of Numbers, Devi also wrote several cookbooks, crime novels and a rather controversial though suppressed and not widely and first study on homosexuality in India (which possibly delayed recognition by Guinness), written in order to understand her gay husband and to better understand the community.