This guy will blow your mind

Meet Ruediger Gamm. You don't need to understand German to be gobsmacked by what he can do.

The below clip is taken from a show called ' Deutschlands Superhirn', broadcast on the ZDF channel on April 27 last.

The format saw five candidates battle it out through a series of mental tests to be crowned 'Germany's Biggest Brain'.

Gamm, 41, is what's known as a 'mental calculator', with the ability to perform complex calculations in his head.

His speciality is the ability to memorise large powers, which he demonstrates here.

Watch as even his four competitors struggle to comprehend what they are seeing and hearing:

Mind. Blown.