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Shakuntala Devi, born in 1939 in India, is a calculating prodigy. Her calculating gifts first demonstrated themselves while she was doing card tricks with her father when she was three. By age six she demonstrated her calculation and memorization abilities at the University of Mysore. At the age of eight she had success at Annamalai University by doing the same.
In 1977 she extracted the 23rd root of a 201-digit number mentally. On June 18, 1980 she demonstrated the multiplication of two 13-digit numbers picked at random by the Computer Department of Imperial College, London.
In 1977, she published the first study of homosexuality in India.