Igor Shelushkov Mathematician
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Igor Shelushkov is a member of the following lists: Soviet people stubs, Year of birth uncertain and 1940s births.
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Igor Alexeyevich Shelushkov (born c.– ?) was a Soviet mental calculator. He mentally extracted roots of large numbers and calculated the number of syllables and characters in a given verse by listening. Shelushkov was featured in the 1968 Soviet popular science film Seven Steps Beyond the Horizon, where he mentally extracted the sixth root of a 12-digit number and the 77th root of another multi-digit number. Shelushkov also competed with the Soviet third generation computer Mir. He extracted the 77th root of a 148-digit number in 18 seconds, while it took about 10 minutes to program the related operation for computer.
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