Papyrus (16/9)? = 3. 160493 ... BC12nd century China 36th century I Kings 7:23.3 434 years ago, Anaxagoras tried to draw a square with a ruler.
In the 3rd century, Archimedes 3. 14 18, Vitruwe 25/8 = 3. 125, Liu Xin 3. 154 130, Zhang Heng 92/29 = 3.17241... √10 = 3.162277 ...150 Ptolemy 377/120 = 45 = 3. 155555 ... Liu Hui 3. 14 159480 Zu Chongzhi 3. 14 15926.
Van Kieron's students have 35 decimal places 1665 Newton OUT 16 decimal places 1699 Abraham Sharp 7 1 decimal places1700 sekikowout10 decimal places1700 decimal places. William Jones introduced the Greek letter π- 17 19, and Dragny calculated the 127 decimal places. But not all of them are correct. 1 12 decimal places 1723 TakebeOUT4 1 decimal places 1730 KamataOUT25 decimal places 1734 leonhard euler introduced the Greek letter π and affirmed its popularity-1. Johann heinrich lambert proved that π is irrational in 76 1 year-1775 Euler pointed out the possibility that π is a transcendental number-1789 Yuri Vega calculated 140 decimal places. But not all of them are correct-137 decimal places 1794 Adrian-is an irrational number (then π is also an irrational number). It also mentions the possibility that π is a transcendental number-6438, but not all of them are correct: 152 decimal places 1844 zacarias Dase and Strassnitzky200 decimal places 1847 Thomas klausen 248 decimal places 1853 Lyman n26 1. Decimal1853 William Shanks 527 Decimal1855 Richter Out 500 Decimal1874 en: It took William Shanks 15 years to calculate 707 decimal. Unfortunately, 1946 D. F. Ferguson found that Lin Deman proved that π is transcendental for VS527 decimal 1882 (Linderman-Weierstrass theorem)-1946 D. F. Ferguson used a desktop calculator to 620 decimal1947. 947 808 decimal places1949 Sir J.W. Wrench and L. R. Smith used a computer (ENIAC) to calculate π for the first time, and all subsequent records were calculated by computer. Mahler proved that π is not a Liuwei number-1955 J.W. wrench. And L. R. Smith3089 decimal 1957 G.E.Felton7480 decimal1958 Francois genuys10000 decimal1958g.e.felton10000 decimal. 38+06 167 decimal 196 1 year IBM 7090 transistor computer 20000 decimal 196 1 year J. W. Wrench, Jr. and L. R. Smith 100000 decimal 1966 250000 decimal 1967 50000+0983 8000000 decimal 1 600000 decimal. 7000000 decimal places 1986 David H. Bailey 290000000 decimal places 1986 Kang Zhengtian. +0986 67000000 decimal places 1987 13400000 decimal places 1988 20 1000000 decimal places 1989 Chunovsky brothers 4800000000 decimal places/kloc. 0 Decimal 1989 Chunovsky Brothers 10 1000000 Decimal 1989 Kangtian 1073000000 Decimal19922180000000. 38+0995 Kanda Yasunari and Gao Qiao 4294960000 decimal places 1995 60000000 decimal places 1996 Chunofsky brothers 800000000000 decimal places 1997 Kanda Yasunari and Gao Qiao 51500000000000. +0999 2060000000000 decimal places 2002 Kang Zheng Jintian's team120 10/0000000 decimal places 2009 Gao Qiao elder sister 2576980370000 decimal places 2009 Fabrice Bellard 2699999999999000 decimal places 20/.