Yep. India's Shakuntala Devi (known in those days as The Human Computer) as a girl used to challenge the mainframes of the 70s with such prodigious feats as multiplication of 2 massive numbers, and frequently pointed out correctly that the computer was wrong after assessing its answer.
As usual, nothing was made of this ability aside from its sideshow value, and no studies made of her brain capacity or computational methods.
Last I heard, she's reduced to making a living selling horoscopes and the like, if she's still alive.
Question is, do we really want to know what our capabilities are as human beings, or do we just want to keep selling big iron to governments and corporations at great profit?