Karnal youth memorises 'pi' to 43,000 digits
An engineer from Haryana's Karnal district has claimed to have set a new world record by memorising the value of 'pi' to 43,000 digits.
Krishan Kumar Chahal told reporters in Chandigarh on Wednesday that he had recalled the mathematical constant with 100 per cent accuracy in five hours and 21 minutes in front of officials of the Limca Book of Records in Delhi recently.
Chahal claimed that with his feat, he had broken the record set in 1995 by Japan's Hiroyuki Goto, who had memorised the value of pi to nearly 42,200 digits.
The Greek letter pi represents the ratio of a circle's circumference to its diameter, which is used to find the area of a circle. It is usually written as "3.141...", meaning that the expansion continues to infinity.
Chahal said he memorised pi by using the 'grid method', that is one of the areas of his research in the field of memory improvement.
In this method, one piece of information is not associated only with the next but also with other pieces of information coming in a sequence, he said. This was then coupled with all the senses of hearing, sight, touch, taste and smell.
Pi is a non-repeating number and does not possess any kind of sequential relation between its numbers. It is used to test the processing speed of algorithms on computers, Chahal said.