Alexis Lemaire (born 1980) is a French artificial intelligence researcher who is said by the British newspapers Sunday Telegraph and The Times to be "the greatest human calculator in history" (8 April 2005), and "the world's most agile brain" by The Independent (April 17, 2005). Lemaire holds the last official world record for extracting the 13th root of a 100-digit number (13.55 seconds) and the last official world record for extracting the 13th root of a 200-digit number (267.77 seconds). The latter is a calculation known as the most difficult in history. Year 1980 (MCMLXXX) was a leap year starting on Tuesday (link displays the 1980 Gregorian calendar). ... This article deals with The Daily Telegraph in Britain, see The Daily Telegraph (Australia) for the Australian publication The Daily Telegraph is a British broadsheet newspaper founded in 1855. ... See also The New York Times, The Times of India, or The Irish Times. ... A calculator is a device for performing calculations. ... April 8 is the 98th day of the year (99th in leap years) in the Gregorian calendar. ... Year 2005 (MMV) was a common year starting on Saturday (link displays full calendar) of the Gregorian calendar. ... The Independent is a British compact newspaper published by Tony OReillys Independent News & Media. ... is the 107th day of the year (108th in leap years) in the Gregorian calendar. ... Year 2005 (MMV) was a common year starting on Saturday (link displays full calendar) of the Gregorian calendar. ... Extracting the 13th root of a number is a famous category for the mental calculation world records. ...

The mind uploading project

Alexis Lemaire works on the mind uploading project. Mental computation enables the brain to behave like a computer, and therefore is useful in studying basic principles which might be one day useful for mind uploading. Mind uploading is expected by some to lead to a technological singularity, practical teleportation, immortality and the space time travel, according to Alexis Lemaire. In transhumanism and science fiction, mind uploading (also occasionally referred to by other terms such as mind downloading, mind transfer, whole brain emulation, whole body emulation, or electronic transcendence) refers to the hypothetical transfer of a human mind to an artificial substrate, such as a computer simulation. ... In transhumanism and science fiction, mind uploading (also occasionally referred to by other terms such as mind downloading, mind transfer, whole brain emulation, whole body emulation, or electronic transcendence) refers to the hypothetical transfer of a human mind to an artificial substrate, such as a computer simulation. ... In transhumanism and science fiction, mind uploading (also occasionally referred to by other terms such as mind downloading, mind transfer, whole brain emulation, whole body emulation, or electronic transcendence) refers to the hypothetical transfer of a human mind to an artificial substrate, such as a computer simulation. ... In transhumanism and science fiction, mind uploading (also occasionally referred to by other terms such as mind downloading, mind transfer, whole brain emulation, whole body emulation, or electronic transcendence) refers to the hypothetical transfer of a human mind to an artificial substrate, such as a computer simulation. ... When plotted on a logarithmic graph, 15 separate lists of paradigm shifts for key events in human history show an exponential trend. ... Teleportation is the movement of objects or elementary particles from one place to another, more or less instantaneously, without traveling through space. ... This article is about living for infinite period of time. ...

The 13th root of a 100-digit number

On 10 May 2002, Alexis Lemaire broke the record of the calculating prodigy Willem Klein, which was 88.8 seconds, and the unofficial one of Gert Mittring, which was 39 seconds. is the 130th day of the year (131st in leap years) in the Gregorian calendar. ... Also see: 2002 (number). ...

On 23 November 2004, Gert Mittring attempted to break Alexis Lemaire's record, but it was officially rejected by the Guinness Book of Records, Saxonia Rekord Club, and the 13th root group. November 23 is the 327th day of the year (328th in leap years) in the Gregorian calendar, with 38 days remaining. ... shelby was here 2004 (MMIV) was a leap year starting on Thursday of the Gregorian calendar. ... Suresh Joachim, minutes away from breaking the ironing world record at 55 hours and 5 minutes, at Shoppers World, Brampton. ...

On 17 December 2004, Alexis Lemaire broke his unofficial world record, reducing it to 3.625 seconds (the time includes reading, calculating, and displaying the answer). He correctly computed the 13th root of the following 100 digit number: 3,893,458,979,352,680,277,349,663,255,651,930,553,265,700,608,215,449,817,188,566,054,427,172,046,103, 952,232,604,799,107,453,543,533 - the root of which is 45,792,573. December 17 is the 351st day of the year (352nd in leap years) in the Gregorian calendar. ... shelby was here 2004 (MMIV) was a leap year starting on Thursday of the Gregorian calendar. ...

This decrease in the record demonstrates that the limiting factor in calculating the 13th root of a 100-digit number is no longer the mental calculation, but the speed with which the answer can be written. For this reason, interest has moved on to the 13th root of a 200-digit number as the real mental calculation record.

The 13th root of a 200-digit number

On 6 April 2005, Lemaire calculated the 13th root of a 200-digit number in 513.55 seconds, then broke his own record on 3 June 2005, reducing it to 267.77 seconds. Calculating the 13th root of a 200-digit number in 5 minutes is by far much more difficult than calculating the 13th root of a 100 digit number in 1 second. In comparison, the 13th root of a 100-digit number is the 'beginner category'. is the 96th day of the year (97th in leap years) in the Gregorian calendar. ... Year 2005 (MMV) was a common year starting on Saturday (link displays full calendar) of the Gregorian calendar. ... June 3 is the 154th day of the year (155th in leap years) in the Gregorian calendar. ... Year 2005 (MMV) was a common year starting on Saturday (link displays full calendar) of the Gregorian calendar. ...

All these records are verified on the official 13th root website.

On February 27th, 2007, he set a world record speed of 1 minute and 47 seconds. He broke this record on July 24th, 2007 with a time of 1 minute and 17 seconds (77.99 seconds) at the Museum of History of Science, University of Oxford, UK