Editing Pi (section)

=== Approximate value and digits ===
Some [[approximations of π|approximations of ''pi'']] include:
* '''Integers''': 3
* '''Fractions''': Approximate fractions include (in order of increasing accuracy) {{sfrac|22|7}}, {{sfrac|333|106}}, {{sfrac|355|113}}, {{sfrac|52163|16604}}, {{sfrac|103993|33102}}, {{sfrac|104348|33215}}, and {{sfrac|245850922|78256779}}.{{sfn|Eymard|Lafon|2004|p=78}} (List is selected terms from {{OEIS2C|id=A063674}} and {{OEIS2C|id=A063673}}.)
* '''Digits''': The first 50 decimal digits are {{gaps|3.14159|26535|89793|23846|26433|83279|50288|41971|69399|37510...}}{{sfn|Arndt|Haenel|2006|p=240}} (see {{OEIS2C|id=A000796}})

'''Digits in other number systems'''
* The first 48 [[Binary number#Representing real numbers|binary]] ([[Radix|base]] 2) digits (called [[bit]]s) are {{gaps|11.0010|0100|0011|1111|0110|1010|1000|1000|1000|0101|1010|0011...}} (see {{OEIS2C|id=A004601}})
* The first 36 digits in [[ternary numeral system|ternary]] (base 3) are {{gaps|10.010|211|012|222|010|211|002|111|110|221|222|220...}} (see {{OEIS2C|id=A004602}})
* The first 20 digits in [[hexadecimal]] (base 16) are  {{gaps|3.243F|6A88|85A3|08D3|1319...}}{{sfn|Arndt|Haenel|2006|p=242}} (see {{OEIS2C|id=A062964}})
* The first five [[sexagesimal]] (base 60) digits are 3;8,29,44,0,47<ref>{{cite journal |title=Abu-r-Raihan al-Biruni, 973–1048 |last=Kennedy |first=E. S. |author-link=Edward Stewart Kennedy |journal=Journal for the History of Astronomy |volume=9 |page=65 |bibcode=1978JHA.....9...65K |doi=10.1177/002182867800900106 |year=1978 |s2cid=126383231}} [[Ptolemy]] used a three-sexagesimal-digit approximation, and [[Jamshīd al-Kāshī]] expanded this to nine digits; see {{cite book |last=Aaboe |first=Asger |author-link=Asger Aaboe |year=1964 |title=Episodes from the Early History of Mathematics |series=New Mathematical Library |volume=13 |publisher=Random House |location=New York |page=125 |url=https://books.google.com/books?id=5wGzF0wPFYgC&pg=PA125 |url-status=live |archive-url=https://web.archive.org/web/20161129205051/https://books.google.com/books?id=5wGzF0wPFYgC&pg=PA125 |archive-date=29 November 2016 |df=dmy-all |isbn=978-0-88385-613-0}}</ref> (see {{OEIS2C|id=A060707}})