Alexis Lemaire (born 1980) is a mental calculation world record holder.
On 23 November 2004, Mittring tried to beat Lemaire's record, but his time of 11.8 seconds was not counted as official, as one organization's rules had decided to stop recognizing records for root extraction of random numbers due to the difficulty of standardizing the challenge.
[7] His latest achievement came on 10 December 2007, where he mentally extracted the 13th root of a random 200-digit number in 70.2 seconds.
The museum's curator of mathematics, Jane Wess, said, "He sat down and it was all very quiet -- and all of a sudden he amazingly just cracked it.
"[9] Lemaire says that his mental feats also have very useful applications in artificial intelligence, his chosen field.