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How much of PI is known?

Updated: 10/26/2022
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13y ago

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At one level a huge deal. Pi is known to an accuracy of the width of a hydrogen atom at the far end of the known universe.

At the same time, since pi is an irrational number, it has an infinitely long decimal representation with no recurrence. So even if we knew 1 quadrillion digits of pi (we don't yet) we would only know one quadriliion infinitieth (to coin a word) of pi - that is 0%.

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Q: How much of PI is known?
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