# How many decimals of Pi do you remember?

Astronuc
Staff Emeritus
I once gave him a piece of paper with $\sqrt{2}$ to 100+ decimal places. He would have me stand there reading the paper while he recited the number - he didn't fake it. He is now responsible for integration of instrumentation and protection (reactor safety) systems in modern nuclear power plants.

Tell him to give up on the number and try reciting safety procedures in case of a melt down. priorities man

Tell him to give up on the number and try reciting safety procedures in case of a melt down. priorities man

haha tribdog :rofl:

Just to be a complete *******, I'm going to resurrect this post.

By the way: 3.141592653589793238 (18 digits)

Monique
Staff Emeritus
Gold Member
Congratulations, I think we have a winner!

Does 10π count?

No, Jim, 10π doesn't count. XD

I used to have a mnemonic system (thanks to my two study hall periods a day in tenth grade), and I ended up memorizing it to about 30 digits. The only ones I remember now are 3.1415926, which is still more than I'll ever need to use...

No, Jim, 10π doesn't count. XD
Doh!

OmCheeto
Gold Member
3.14159265358979

365.24219878

as a lysdexic, I got very po'd memorizing these silly numbers only to find myself getting the last four digits mixed up at the ripe old age of 10. I gave up.

Then in college I discovered you were not supposed to list accuracy past a certain point because it was pointless.

I was very happy that I stopped.

mgb_phys
Homework Helper
But can you recite all of it - backwards

3.14

Pythagorean
Gold Member
3.141

22/7

OmCheeto
Gold Member
But can you recite all of it - backwards
Nope. I don't think I can recite anything backwards. I'm a forward thinker.

Monique
Staff Emeritus
Gold Member
I don't understand why people waste their time remembering the decimals of Pi, do something productive that will actually be of value!

exactly, one should also memorise e; Universal gas constant, R; Stefan-Boltzmann constant, σ; Speed of light in a vacuum, c; Planck constant, h; The density of air at various altitudes, ρ; etc, etc, etc... :tongue:

FeDeX_LaTeX
Gold Member
Used to do 368 digits - can't anymore though, since it was so pointless. I can easily do about 262 now, though.

Wow, a very tenacious thread with several necropostings all the way from 2003.

I find memorizing a couple of telephone #'s more practical.

22/7

I remember 3.14159. Recently I tried to add an additional 5 or 6 numbers onto it during my spare time. I remembered them for a little while, but now I can't remember them.

I know all of the digits. :P

Gokul43201
Staff Emeritus
Gold Member
I know all of the digits of 22/7

BobG
Homework Helper
I know 6 digits, which is 3 more than I really need.

I know 7 digits of 22/7, which is definitely all I need.

I know all of the digits. :P
I know most of them, but I always forget the last one.

Seriously, I inadvertantly memorized 16 digits, since this is the approximate limit of double precision representation of floating point numbers in computers. In the old days, cut and paste was not as easy as today, and it was quicker to just type them in.

3.141592653589793

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