the current record for decimal places that pi has been calculated to is 1,241,100,000,000
THIS IS MORE THAN A TRILLION
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As of 17 October 2011, the answer is 10 trillion.
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1.2411 trillion digits (1,241,100,000,000) digits of pi have been dicovered.
Because Pi is known to be an irrational number it means that the digits never end or repeat in any known way. But calculating the digits of Pi has proven to be an fascination for mathematicians throughout history. Some spent their lives calculating the digits of Pi, but until computers, less than 1,000 digits had been calculated. In 1949, a computer calculated 2,000 digits and the race was on. Millions of digits have been calculated, with the record held (as of September 1999) by a supercomputer at the University of Tokyo that calculated 206,158,430,000 digits. (first 1,000 digits). However, learning 3.141, is all that is necessary. But you can go on and on, to infinity, and never find the exact circumference of a circle. I have only memorized 205 digits of pi; and yes I do use it to find the circumference of a circle.
the record is set at 2.7 trillion decimal places * * * * * As of 17 October 2011, the answer is 10 trillion.
Pi is infinite. The current number of digits calculated is over ten-trillion. If you want to find a pretty good estimate, divide 22 by 7.
There are too many digits, but I'll give you the ones I've memorized: 3.141592653589793238462643383279502884197169399375105820974944... ~ To the above answer: That's not what the question is asking. Answer: Digits of pi used to be calculated by dividing the circumference by the diameter of a circle. The same answer will come out for all circles. Now, we have machines that can crunch up millions of digits in a relatively short amount of time.