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Pi calculated to 31 trillion digits
#1
https://www.bbc.co.uk/news/technology-47524760

The value of the number pi has been calculated to a new world record length of 31 trillion digits, far past the previous record of 22 trillion.

Emma Haruka Iwao, a Google employee from Japan, found the new digits with the help of the company's cloud computing service.

Pi is the number you get when you divide a circle's circumference by its diameter.

The first digits, 3.14, are well known but the number is infinitely long.

The calculation required 170TB of data (for comparison, 200,000 music tracks take up 1TB) and took 25 virtual machines 121 days to complete.



Well, I guess that's one way to get a world record - although, I doubt anyone will ever find a use for this. Most of the time, we don't need anything more precise than 3.14159 (heck, just 3.14 is usually good enough). 

Anyway, happy Pi Day :) !
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#2
The thought of that many numbers makes me want to vomit.
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#3
Whilst it's a great achievement for today's date, and in general, I really wish all these incredibly clever people were putting their time and money into things more useful for the world than discovering the 31 trillionth digit in pi...
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#4
(03-14-2019, 07:57 PM)Pyrite Wrote: Whilst it's a great achievement for today's date, and in general, I really wish all these incredibly clever people were putting their time and money into things more useful for the world than discovering the 31 trillionth digit in pi...

Well, I don't think it requires much brain power: there are formulas and equations which can be used to crank out as many digits of pi as you want, provided you have enough computing power.

Though, getting to 31 trillion digits does require a lot of computing power: here, they had 25 virtual machines working away at it for 121 days. So, it's perfectly fair to ask whether this is best use of those computers, since there are surely plenty of useful real-world problems that they could have been working on :P !
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#5
Yeah, that's kind of what I meant by that!!
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#6
In case anyone's interested in this stuff, FiveThirtyEight did an article about how Pi is computed (including some of the formulas that can be used to do it): 

https://fivethirtyeight.com/features/eve...end-of-pi/

As with the prime numbers, there's been massive progress over the last 70 years or so. And also as with the prime numbers, we still have an infinitely long way to go :P .
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#7
(03-14-2019, 07:57 PM)Pyrite Wrote: I really wish all these incredibly clever people were putting their time and money into things more useful for the world than discovering the 31 trillionth digit in pi...
ahahahahaha. I thought the same 8D
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