# Pi (Ramanujan's formula) Calculator

## Calculates circular constant Pi using the Ramanujan-type formula.

 formula Ramanujan 1 1914Ramanujan 2 1914Chudonovsky 1987 6digit10digit14digit18digit22digit26digit30digit34digit38digit42digit46digit50digit
The calculation ends when two consecutive results are the same.
The accuracy of π improves by increasing the number of digits for calculation.

In 1914, the Indian mathematician Ramanujan discovered the formula for computing Pi that converges rapidly.
In 1987, Chudnovsky brothers discovered the Ramanujan-type formula that converges more rapidly.

Ramanujan's formula for Pi
Pi (Ramanujan's formula)
 [1-10] /24 Disp-Num5103050100200
[1]  2022/11/01 11:11   60 years old level or over / An engineer / Useful /
Purpose of use
Preparing an introductory course on computer science/numerical calculation
[2]  2022/07/24 06:09   Under 20 years old / Elementary school/ Junior high-school student / Very /
Purpose of use
Create a working c# program to calculate pi.
Comment/Request
This was very useful!
[3]  2022/03/15 09:02   50 years old level / An office worker / A public employee / Very /
Purpose of use
Today is pi day and I am sharing some of my favorite pi formulas with colleagues , thank you.
[4]  2021/09/26 19:08   Under 20 years old / High-school/ University/ Grad student / A little /
Purpose of use
I really don't know but i've memorized upto 25 decimal places lol!
[5]  2021/06/01 09:42   60 years old level or over / A teacher / A researcher / Very /
Purpose of use
Teaching students to use the 911EX.
Comment/Request
I find Ramanujan's math fascinating.
[6]  2021/05/01 18:51   - / - / - /
Purpose of use
prediction
[7]  2020/09/06 20:04   60 years old level or over / A retired person / Very /
Purpose of use
Studying history of Pi accuracy and methods of calculating Pi over time
[8]  2020/07/18 17:55   Under 20 years old / High-school/ University/ Grad student / Very /
Purpose of use
trying to find motivation for this formula
Comment/Request
can anyone provide the motivation/proof of this formula
[9]  2020/06/19 00:46   60 years old level or over / An engineer / Very /
Purpose of use
Curiosity, doing research on Ramanujan
Comment/Request
Nice place for us geeks!
[10]  2020/05/26 19:49   40 years old level / Others / Useful /
Purpose of use
Curiosity, was researching Ramanujan's formula for Pi and stumbled onto this, noticed the comments and then the questionnaire, and decided to check it all out, reply, comment, and such. FYI I am currently disabled, but was ABD Comp. Lit., PLC, with a BA in Sociology, and MA in Philosophy.

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