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.
[1] 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.
[2] Shelushkov was a postgraduate at Gorki Polytechnic Institute (now Nizhny Novgorod State Technical University).
[2] His abilities were mentioned by Russian mathematician Vladimir Tvorogov, who attended one of his performances,[3] and by psychologist Artur Petrovsky.