Pi Computed to 10 Trillion Digits

This is way off topic, but we can’t resist. At the website of CBS News we read: Pi calculated to its ten trillionth digit.

The headline pretty much tells the story, but here are a few excerpts, with bold font added by us:

It took more than a year but a Japanese math enthusiast has used a a home PC to calculate the ten trillionth digit of pi, breaking a record set a couple of years ago by a supercomputer. … Shigeru Kondo was assisted in the feat by Northwestern University grad school student Alexander Yee, who wrote the software.

But why? According to Wikipedia’s article on Pi:

[T]he decimal representation of π truncated to 11 decimal places is good enough to estimate the circumference of any circle that fits inside the Earth with an error of less than one millimetre, and the decimal representation of π truncated to 39 decimal places is sufficient to estimate the circumference of any circle that fits in the observable universe with precision comparable to the radius of a hydrogen atom.

Well, it doesn’t have to be useful. It’s a quest, worthy for its own sake. One more excerpt:

During the course of the project, the temperature of the computer room climbed to nearly 104 Fahrenheit, or 40 Celsius. “We could dry the laundry immediately, but we had to pay 30,000 yen ($390) a month for electricity,” Kyodo News quoted Kondo’s wife, Yukiko, as saying.

See there? The project had a practical application after all — drying the laundry.

In case you’re those — shall we say — irrational types who is pi obsessed, we remind you that we’ve posted about pi before: Pi Day is Coming! That was in anticipation of 14 March, or 3-14 as some would write it. And don’t forget to mark your calendar, because the greatest Pi Day of the century is coming on 14 March of 2015 — that date will be 3-14-15.

For other crucial pi information, read about the Indiana Pi Bill. Yes, the legislators of that state almost enacted legislation to change the value of pi. And of course you know all about The Scriptural Value Of Pi.

When there’s more pi news, your Curmudgeon will bring it to you.

Copyright © 2011. The Sensuous Curmudgeon. All rights reserved.

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11 responses to “Pi Computed to 10 Trillion Digits

  1. n case you’re those — shall we say — irrational types

    Oh, that’s good!

  2. It’s not off topic. That we cannot calculate the exact value of Pi is obviously evidence of Intelligent Design!

  3. I’m glad that the world didn’t end today after all, so that I could enjoy your post in pi. Keep up the good work.

  4. Actually, SC, given the value of Pi to just 8 digits (3.14159265 . . .), and after taking rounding into effect, the “greatest Pi Day of the century” will occur on March 14, 2016, not on that date in 2015.

  5. A. S. Haley says:

    the “greatest Pi Day of the century” will occur on March 14, 2016, not on that date in 2015.

    No no no. We’re talking about real digits here. Actually, the great moment will be March 14 of 2015 at 9:27 AM.

  6. cnocspeireag

    9.26 AM according to your rules. A S Haley beat me to it.

  7. Tomato Addict

    Mmm … Pi

  8. Tomato Addict says: “Mmm … Pi”

    You will not defile this blog with even the thought of anything as disgusting as tomato pie.

  9. You will not defile this blog with even the thought of anything as disgusting as tomato pie.

    Have you tried it?

  10. Gary asks: “Have you tried it?”

    No! I didn’t think such an abomination existed. Then I Googled it, with “tomato pie” in quotes to get an accurate count. Gods — there were over 900,000 hits! There’s a lot of disgusting people out there.

  11. Tomato Addict

    Curmie> There’s a lot of disgusting people out there.

    Hey, I said nothing about Tomato Pie, and I never knew such a thing existed either. What does that say about you? 😉

    Now that you mention it though, I’ve got a bowl full of green tomatoes rescued from the first frost, a little free time, and a new recipe I might try out.