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Math Whiz Breaks Calculation Record

FRANKFURT, Germany - A 38-year-old with degrees in psychology, education
and computer science needed only 11.8 seconds to calculate the 13th root of
a 100-digit number in his head, setting a new record, organizers said.

Onlookers with electronic calculators needed more time to solve the problem
that Gert Mittring figured on his own, with two umpires checking the time,
at a math museum in the small German town of Giessen near Frankfurt in
western Germany.

"I first think of an elegant problem-solving algorithm and the result comes
immediately," said Mittring, who beat the previous record of 13.55 seconds,
set by the Frenchman Alexis Lemaire in 2002, according to organizers of the
Tuesday night event.

But his feat will not be immortalized in black and white in the Guinness
Book of World Records, because the book no longer recognizes root
calculations of random numbers due to the difficulty of standardizing the
challenge, spokesman Sam Knight said Wednesday.

"Some numbers are easier to root than others — we are working on a way to
standardize this," Knight said in a call from London.

"But that is not to take away from Mittring's performance. He is pretty
incredible. He does hold the world record for memorizing 22 random digits
in just four seconds."

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