# DailyDirt: Pi Math

### from the *urls-we-dig-up* dept

National Pie Day is not actually March 14th (although it really should be, if only to make it more memorable). But here's to the number, not the delicious dessert.
- Does pi contain every set of finite number sequences? The answer to that question may not be known, but the first trillion or so digits of pi appear to be statistically random -- with 0-9 appearing with even distributed frequency. [url]
- It's possible to calculate the nth digit of pi without calculating every previous digit. So the gazillionth digit of pi can be verified, if you really need to know it. [url]
- If you're thinking about coming up with a new way to calculate pi, you can check your work for the first several trillion digits. Beyond about 10 trillion digits, you're into record breaking territory, and you'll need to adopt some other strategies. [url]

Filed Under: calculations, irrational, math, numbers, pi

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Anonymous Coward,14 Feb 2013 @ 10:49pmthis is a number that contains every possible 1 digit sequence of numbers.

you cannot make up or think of a number that is not contained in this number.

for a 2 digit sequence you would need to have a 0123456789 after every occurrence of 0123456789 from the original 10 digit number.

ie.

00010203...... 09....10111213....19...2021222324...29.....

....

....

90919293949596979899

no matter what combination of 2 digit sequence you choose it will be contained in this one fixed (not random) FINITE NUMBER..

if your sequence is 3 digits long, for every 2 digit sequence (ie 12) you will need a 0 to 9 after it..

120121122123124125126127.....

that gives me a number that contains every possible combination of 3 digit sequence.

you notice that as long as you have a finite sequence (a specific length, it will within a finite number length of random digits.

you don't need an infinity of numbers you only need an even statistical distribution and a large number set to contain ANY number sequence of any finite length. You may need a very large number but you do not need an infinite number.

in an infinite number a sequence of infinite length will occur an infinite number of times.

which I believe is a few more than none !!!!!.

you can have a sequence of infinite length (such as pi0 but you cannot have a infinite number of combinations of a sequence of a fixed length.

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