How many decimals of Pi do you remember?

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The discussion revolves around the memorization of Pi, with participants sharing their personal experiences and the number of decimal places they can recall. One user boasts memorizing 150 digits, while others mention knowing fewer, often citing practical reasons for not memorizing more, such as calculators providing sufficient precision. Some participants view memorizing Pi as a fun challenge or a mental exercise, claiming it helps improve memory skills. Others express skepticism about the usefulness of memorizing such a long string of numbers, suggesting that time could be better spent on more practical knowledge. Various mnemonic techniques are discussed, and some users share humorous anecdotes related to their experiences with Pi. The conversation also touches on the broader implications of memory exercises, with some arguing that the act of memorization itself can be beneficial, regardless of the specific content. Overall, the thread highlights a mix of enthusiasm, humor, and practicality regarding the memorization of Pi.
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How many decimals of Pi do you people remember by heart. I started learning them not so long ago and so far i got:
3.14159 26535 89793 23846 26433 83279 50288 41971 69399 37510
58209 74944 59230 78164 06286 20899 86280 34825 34211 70679
82148 08651 32823 06647 09384 46095 50582 23172 53594 08128
which is exactly 150 (without cheating). I try to learn 5-10 more each day.
 
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2 decimals. 3.14. Not that memorizing pie out to all those decimal places is pointless, but...well, yeah, it's pointless.
 
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I got to admit, it's probably one of the less useful things i ever did in my life, but heh, i had to come up with something to do in non-physics or math classes...
 
Oh my god! why? if you ever need to use pie why don't you just use the pie button on your calculator, far simplar.
 
Dude, andy, pi buttons on calculators don't go to 150 digits...
 
I'm with zk4586 on this one. I think once I may have known it to five digits but that was long ago.
 
I just find that learning pi is a good way to maintain your memory active, plus it's a really good time waster. I found out that now i can remember series of numbers in a lot less time. I just use birthdates, repeating numbers, and my latest, pattern you do with your fingers when you type the keys on the numpad.
 
i took the liberty of stealing the text file of 100 000 dp of pi and pasted it all over my own website :P

http://www.sweeto.co.uk/Stuff/Pi.php?page=Pi

personally i can only rememeber 3.141592653 :P
 
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Originally posted by pi-70679
I just find that learning pi is a good way to maintain your memory active, plus it's a really good time waster.
Yes, it sounds pretty sweet and you have certainly memorized an impressive string of digits too. How about something for the coordination of the body such as juggling? If you are standing around almost anywhere with time on your hands you can usually find a few rocks and have at it…
 
  • #10
as nice as this sounds, i doubt my teachers would appreciate.
 
  • #11
Originally posted by pi-70679
as nice as this sounds, i doubt my teachers would appreciate.
they probably don't appreciate you memorizing pi in their class either so why not go the full distance and start juggling. In fact why don't you start out with chainsaws or flaming torches for that matter, I'm sure the teachers will love that, it would probably bring a lot of intelectual input to the class...
 
  • #12
Just so you know, i practice shooting for hand eye coordination. Sniping (although it has a bad reputation), is the best exercise i know to learn how to totally control how your muscles react and is quite good for coordination of body-eye coordination. I've been introduced to that sport by a friend in the army, and i just love it.
 
  • #13
What's Pi? :smile: I usually just round up at 3.142.

Originally posted by pi-70679...
Sniping (although it has a bad reputation), is the best exercise i know to learn how to totally control how your muscles react and is quite good for coordination of body-eye coordination.

When you put this statement together with your memorizing Pi to 150 decimal places, we can only hope that you live in a trailer because they don't have basements to hide victims bodies. Just kidding, (I hope)
 
  • #14
Hi

If caculators don't go up to 150 digits then you can't use 150 digits of PI when using a caculator and you would need a caculator to work out the result of any sum involving pi at 150 digits
 
  • #15
Artman: True :smile: it may seem weird when you read those statements one after the other. If only considering those two statements, i would in fact seem like a complete maniac... Which i can reassure you i am not: i use an air rifle, which means that i have no clue about how to handle a rifle with recoil and i am thus completely harmless. lol, i'll be more careful next time and try to express myself clearer so i don't look like a psycho.

Alex00: I never use that many decimal places for calculations, if you know about significant figures then you know it would be completely useless anyways. It's just for the fun of it.
 
  • #16
hi

fun, in maths?
 
  • #17
So very very sad, how can you have fun in a maths lesson the only reason its like at my college is because the maths teacher is very sexy and all the blokes want to give her one but that's a different topic all together, the only good thing about maths is its very useful whilst studying physics, at least alex00 agress with me.
 
  • #18
3.1415926

How many do I use if I'm not using a calculator?

3

If I'm reeeeallly picky, I just round up the answer a bit to deal with the .14.

Otherwise, it's kinda pointless to do it in your head, so why bother memorizing?
 
  • #19
3.1415926

that's all i got. but that's without actually trying to memorize it. it may not be 150 decimal places, but most people look at me funny when i reel it off, and that's good enough for me
 
  • #20
I memorised it to 14 digits as a child. Based on a famous quotation by Albert Einstein: "How I need a drink. Alcoholic, of course, after the heavy chapters involving quantum mechanics." The number of letters in each word successively correspond to the digits in Pi.

I find it useful as a sort of "mantra", it helps me calm myself down when getting overly emotional. Maybe such numerical recitation would be useful in any activity requiring calm nerves and an even mind. Sniping, perhaps?
 
  • #21
I remember the exact number for π ------> it's right under the space button on my HP48GX:wink:
 
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  • #22
Originally posted by pi-70679...
...If only considering those two statements, i would in fact seem like a complete maniac... Which i can reassure you i am not

That's a relief.

By the way, I think it's amazing that you have Pi memorized to 150 places. I consider myself lucky to be able to memorize my own phone number.
 
  • #23
so far i am in 2nd place...im a bit of a geek and i have memorized 32 place

3.14159265358979323846264338237950

just started today cause i was bored lol...trying to get to 50 by 2morrow
 
  • #24
i know 5 places. 3.1416, (rounded).
 
  • #25
Which value of pi did you want?

The bill House Bill No. 246, Indiana State Legislature, 1897, reportedly set the value of pi to an incorrect rational approximation.

...The bill implies four different values for pi and one for sqrt(2), as follows: pi' = 16/sqrt(3), 2 sqrt(5 pi/6), 16 sqrt(2)/7, 16/5 ( 9.24 , 3.236 , 3.232 , 3.2 respectively.) sqrt(2)' = 10/7.
http://www.cs.uwaterloo.ca/~alopez-o/math-faq/mathtext/node18.html
 
  • #26
There's more after 3?
 
  • #27
In 8th grade my teacher had a poster with Pi on it on the backwall. One day I decided to try and memorize the entire list of numbers, but I only got to 3.14159 and never tried it another class period. For some reason that went into long term memory.
 
  • #28
Another four-year old thread? Do these frequently show up on Google when people seach for strings like "pi digits memorize?"
 
  • #29
Yea sometimes if I do a search for some math/physics related subject I get pointed to a really old PF thread. Sometimes the thread is so interesting that I would like to reply to it, but its pointless. Its too bad that most people don't look at the dates on threads found on google before replying :-(.

ps - 3.14159
 
  • #30
I never really bothered past 3.14; it's accurate enough for my needs.

loseyourname said:
Another four-year old thread? Do these frequently show up on Google when people seach for strings like "pi digits memorize?"

Just for that, I shall return to this very thread on May 22, 2011 and reply. ... and don't think I'm joking. :devil: muahahaha *evil*

... seriously, I'm not joking. you'd be amazed at the trivialities with which I fill my procrastination-filled days. In fact, I'm supposed to be doing something as we speak! :devil: :devil: muahahahaha! *pure evil*
 
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  • #31
https://www.amazon.com/dp/0802775624/?tag=pfamazon01-20 includes one million digits of pi :biggrin:

But in case you need just a few, here are the first ten thousand digits: - http://www.joyofpi.com/pi.html -

and you're in good company - http://www.joyofpi.com/pilinks.html


I had a friend in high school who memorized \sqrt{2} to 200+ decimal places, because e and pi were to mundane. He used to come up to me at my locker and start reciting. :smile: We still keep in contact after 35 years.

https://www.amazon.com/dp/0691058547/?tag=pfamazon01-20
 
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  • #32
I'm another 2 person -- there's too much other things to be doing to go any further :-p
 
  • #33
I have remembered so many digits of pi that I can't recall the exact count.
 
  • #34
I can remember all the digits but not necessarily in the correct order.
 
  • #35
up to 50 digits

since my ast post i have memorized more digits, the last time i posted i told you i can remember up to 32 digits. I can now receit the first 50.

3.14159265358979323846264338327950288419716939937510
 
  • #36
I had a math teacher that said in grad school he memorized digits of pi to compete with one of his friends. Personally I know 3.14159
 
  • #37
who wants to make a wager...the bet will be " who can memorize the first 100 decimals of pi before the other person" lol
 
  • #38
I just say \pi. No worries about precision
 
  • #39
I say 3.14159265 but then I screw up and say 7 every time even though I know it's wrong. it's just stuck in my head that way. In a pinch I can recite pi to 3000 digits since no one I know can check whether I'm wrong or not
 
  • #40
I just carry with me a gigantic wheel and a ruler at all times. ... this thread should be re-named "the official pi lame-joke-O-rama thread" :smile:
 
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  • #41
Kurdt said:
I can remember all the digits but not necessarily in the correct order.

MY joke, Kurdt. That's MY joke!

In 10th grade I had a 12 digit calculator (1980's HP, the "sideways" kind). If you multiplied pi x 1000, then subtracted 3141, you got an extra 3 digits, for a total of 15 digits. I never bothered to memorize any more than that:
3.14159265358979
 
  • #42
Chi Meson said:
MY joke, Kurdt. That's MY joke!

Thats what happens when ancient threads are resurrected. I can't be expected to read all posts :-p

Anyway it was a rather awful rip off of http://www.youtube.com/watch?v=JQNYUJIW4sw".
 
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  • #43
Astronuc said:
I had a friend in high school who memorized \sqrt{2} to 200+ decimal places, because e and pi were to mundane. He used to come up to me at my locker and start reciting. :smile: We still keep in contact after 35 years.
and he's still reciting?
 
  • #44
At last count, I remember somewhere around 200 digits of pi.
 
  • #45
It has a three in it, right?
 
  • #46
tribdog said:
and he's still reciting?

hahahaha :smile::smile:
 
  • #47
I decided to remember a few this weekend just for kicks...I have 3.141592653589793238.
 
  • #48
gabee said:
I decided to remember a few this weekend just for kicks...I have 3.141592653589793238.

Ha! I knew it!
 
  • #49
tribdog said:
and he's still reciting?
Yes - he still does it, but he's not quite so serious about it.
 
  • #50
Have you ever checked him? once you get three or four digits in you could make it up and no one would know. It's easy to fake being a genius, look at Smurf. I know a guy who mumbles numbers all the time.
 

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