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arXiv:2201.12601math.NT

A formula for the $n^{\rm th}$ decimal digit or binary of $π$ and powers of $π$

Simon Plouffe

Early discovery. Linked by one identifiable commenter. This paper is outside the main ranking; a mention is not an endorsement.

Abstract

By using an asymptotic formula known for the numbers of Euler and Bernoulli it is possible to obtain an explicit expression of the nth digit of $π$ in decimal or in binary, it also makes it possible to obtain the $n^{\rm th}$ digit of powers of $π^n$.

arXiv comments
Added a formula for n! much better than Stirling
Journal reference
DOI
Subjects
math.NTNumber Theory

On Hacker News

Linked by 1 identifiable commenter in 1 comment across 1 thread, from May 2022 to May 2022. Found in 1 HN submission from Jan 2023 to Jan 2023. Open submission discussions.

Comments linking this paper, per year.

Discussed in comments1 thread

    • I was very surprised to learn that Plouffe has actually also devised a formula that gives the nth decimal digit! It looks like this was a much more recent discovery. https://mathworld.wolfram.com/Digit-ExtractionAlgorithm.html https://arxiv.org/abs/2201.12601 I first wrote that…

      schoenView on HNParent context

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