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www.bbc.com/news/technology11313194
A researcher has calculated the 2,000,000,000,000,000th digit of the mathematical constant pi  and a few digits either side of it. Nicholas Sze, of tech firm Yahoo, said that when pi is expressed ...
en.wikipedia.org/wiki/Chronology_of_computation_of_π
The table below is a brief chronology of computed numerical values of, or bounds on, the mathematical constant pi (π).For more detailed explanations for some of these calculations, see Approximations of π.
blog.google/products/googlecloud/mostcalculateddigitspi
And since pi is an irrational number, there’s no end to how many of its digits can be calculated. You might know it as 3.14, but math and science pros are constantly working to calculate more and more digits of pi, so they can test supercomputers (and have a bit of healthy competition, too).
www.cnet.com/news/pidreamgooglersetsrecordformost...
When I think of pi, I think of three digits: 3.14. Google cloud developer advocate Emma Haruka Iwao thinks in terms of trillions of pi digits. Haruka Iwao set a world record by calculating pi to ...
www.washingtonpost.com/business/2019/03/14/googleemployee...
Google computed Pi to 31.4 trillion digits, or Pi multiplied by 10 to the 13th power, breaking a world record. Sections ; ... has broken the Guinness world record for calculating the most digits ...
www.npr.org/2019/03/14/703566696
Calculating more than 31 trillion digits of pi took months for Emma Haruka Iwao and her team, who beat the previous record for the most accurate value of pi by trillions of digits.
www.numberworld.org/misc_runs/pi12t
In our 5 and 10 trillion digit computations, the threshold where we switched to the 5step algorithm was approximately 1 trillion digits. So all multiplications above 1 trillion digits had to pay a penalty of 2x in the disk I/O. In the 12.1 trillion digit computation, this threshold was increased to 10 trillion. How did that happen?
www.theverge.com/2019/3/14/18265358/picalculationrecord...
A Google employee from Japan has set a new world record for the number of digits of pi calculated. Emma Haruka Iwao, who works as a cloud developer advocate at Google, calculated pi to 31 trillion ...
www.numberworld.org/misc_runs/pi5t/details.html
Following my announcement of 500 billion digits of e, Shigeru Kondo contacts me saying that he wishes to attempt 5 trillion digits of Pi. March  AprilI add lots of new developments and improvements to the program in preparation for such a large computation. During this time, Shigeru Kondo helped me do a lot of testing on these new features.

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