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PI Day – 25 Facts About pi (piday.org)
2 points by belter on March 14, 2023 | hide | past | favorite | 2 comments


FTA: the number 123456 doesn’t appear anywhere in the first million digits of pi. It is a bit shocking because if a million digits of pi don’t have the sequence 124356, it definitely is the most unique number.

- funny typo. The string 124356 occurs at position 565785 in the decimal expansion of pi.

- There are only 999,995 six-digit sequences in the first million digits, so by the pigeonhole principle (https://en.wikipedia.org/wiki/Pigeonhole_principle), there should be at least 5 such six-digit sequences. That one of them looks nice to humans isn’t particularly surprising given our ability to detect patterns.


Wonder how many neurons and synapses or forest of memory trees Rajveer Meena's mind needs to store and recall pi to 70000 decimal places. And, how pi fades and needs refreshing with time passing. And, if pi subsequences are reachable through skips and jumps.




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