PI: How many digits can you recall?

[rmac52]

I only know 3.1415926

In reality I would never even use that many.  It's rare to have 7 significant figures so I don't need to know that many.  If I need more accuracy than 4 sig figs I'm going to be using a computer to solve it anyway.  

5 hours ago, DXMember said:

I'm not sure how much I can recall by heart,

but I have written down the first 10^64 digits, after that it loops again (:

Ya it would take like 10 years to right out pi to the 10^8 place if you wrote 1 digit per second.  

So maybe you should think before you make up stuff.

 

[Drunk_Klaus]

11 after the decimal. It's how many that show up when you google pi and that's how I've remembered it.

[Kimmers]

6 hours ago, Blade of Grass said:

Ignoring the fact that you would probably die before writing out 10^64 digits, Pi also never loops. 

 

Something thats interesting, you'll never need to memorize more than 39 digits of Pi, 39 is the number of digits required to calculate the circumference of the universe from its radius... To the width of 1 hydrogen atom. 

http://www.jpl.nasa.gov/edu/news/2016/3/16/how-many-decimals-of-pi-do-we-really-need/

what about a planck width

[Blade of Grass]

7 hours ago, DXMember said:

I don't have to write it out by hand, as far as I know it has not been proven that Pi never loops, so right now your only option is to calculate the ((10^64)+1)th digit and prove me wrong.

There's also a lot of interesting theories of what would happen if someone proved that Pi loops or if all irrational numbers loop - that would enable the possibility of us living in a matrix.

 

And your fact is actually really fascinating )))

We know that irrational numbers do not loop, here's a good explanation of the proof http://www.askamathematician.com/2013/12/q-how-do-we-know-that-%CF%80-never-repeats-if-we-find-enough-digits-isnt-it-possible-that-it-will-eventually-start-repeating/

1 hour ago, Kimmers said:

what about a planck width

Depends on what the scale is, if you wanted to locate something the size of a planck width on a baseball I'm sure 39 digits would still be enough. 

 

39 digits gets you 1.0e-10 m on a 8.8e26 m scale, so 1.62e-35 m on a 2.34e-1 m scale seems about right. 

[PurpleDido]

PI isn't even accurate, why bother?

[D-Dos Dan]

22/7   /s

 

But in all seriousness we had a competition on pi day, that for every 10 digits of pi memorized they got to throw a water balloon at any teacher of the maths department, I only got 14, but some guy got 230...

[BingoFishy]

13 hours ago, wcreek said:

3.1415 that' pretty much it for me.

1.1416 is more accurate cuz rounding

[Lucaz97]

I remember this much 3.14159265358979323

[You_are_a_cunt]

Ugh, 3 and 14%, since that's enough for what I need pi for