圆周率的计算历史

圆周率的计算历史 时间 纪录创造者 小数点后位数 前2000 古埃及人 1 前1200 中国 1 前500 圣经 1 前250 Archimedes 3 263 刘徽 5 480 祖冲之 7 1429 Al-Kashi 14 1593 Romanus 15 1596 Ludolph Van Ceulen 20 1609 Ludolph Van Ceulen 35 1699 Sharp 71 1706 John Machin 100 1719 De Lagny 127(112位正确) 1794 Vega 140 1824 Rutherford 208(152位正确) 1844 Strassnitzky & Dase 200 1847 Clausen 248 1853 Lehmann 261 1853 Rutherford 440 1874 William Shanks 707(527位正确) 20世纪后 年 月 纪录创造者 所用机器 小数点后位数 1946 Ferguson 620 1947 1 Ferguson 710 1947 9 Ferguson & Wrench 808 1949 Smith & Wrench 1,120 1949 Reitwiesner et al ENIAC 2,037 1954 Nicholson & Jeenel NORC 3,092 1957 Felton Pegasus 7,480 1958 1 Genuys IBM 704 10,000 1958 5 Felton Pegasus 10,021 1959 Guilloud IBM 704 16,167 1961 Shanks & Wrench IBM 7090 100,265 1966 Guilloud & Filliatre IBM 7030 250,000 1967 Guilloud & Dichampt CDC 6600 500,000 1973 Guilloud & Bouyer CDC 7600 1,001,250 1981 Miyoshi & Kanada FACOM M-200 2,000,036 1982 Guiloud 2,000,050 1982 Tamura MELCOM 900II 2,097,144 1982 Tamura & Kanada HITACHI M-280H 4,194,288 1982 Tamura & Kanada HITACHI M-280H 8,388,576 1983 Kanada, Yoshino & Tamura HITACHI M-280H 16,777,206 1983 10 Ushiro & Kanada HITACHI S-810/20 10,013,395 1985 10 Gosper Symbolics 3670 17,526,200 1986 1 Bailey CRAY-2 29,360,111 1986 9 Kanada & Tamura HITACHI S-810/20 33,554,414 1986 10 Kanada & Tamura HITACHI S-810/20 67,108,839 1987 1 Kanada, Tamura & Kubo et al NEC SX-2 134,217,700 1988 1 Kanada & Tamura HITACHI S-820/80 201,326,551 1989 5 Chudnovskys CRAY-2 & IBM-3090/VF 480,000,000 1989 6 Chudnovskys IBM 3090 525,229,270 1989 7 Kanada & Tamura HITACHI S-820/80 536,870,898 1989 8 Chudnovskys IBM 3090 1,011,196,691 1989 11 Kanada & Tamura HITACHI S-820/80 1,073,741,799 1991 8 Chudnovskys 2,260,000,000 1994 5 Chudnovskys 4,044,000,000 1995 8 Takahashi & Kanada HITACHI S-3800/480 4,294,967,286 1995 10 Takahashi & Kanada 6,442,450,938 1997 7 Takahashi & Kanada 51,539,600,000 1999 4 Takahashi & Kanada 68,719,470,000 1999 9 Takahashi & Kanada HITACHI SR8000 206,158,430,000