|
Year |
People(s) |
Value/Achievement |
| 2000 B.C. |
Babylonians |
3 1/8 |
| 1650 B.C. |
Egyptians |
(16/9)2 = 3.1605 |
| 1200 B.C. |
Chinese |
3 |
| 550 B.C. |
Old Testament |
3 |
| 300 B.C. |
Archimedes |
Proves 3 10/71<Pi<3 1/7
211875/67441 = 3.1416 |
| 200 A.D. |
Ptolemy |
377/120 = 3.1417 |
| 300 A.D. |
Chung Huing |
√10 = 3.1623 |
| 263 A.D. |
Wang Fau |
157/50 = 3.14 |
| 500 A.D. |
Tsu Chung-Chi |
Proves
3.1415926<Pi<3.1415929203 |
| ~500 |
Aryabhatta |
3.141818 |
| ~600 |
Brahmagupta |
√10 = 3.1623 |
| ~1220 |
Fibonacci |
3.141818 |
| 1596 |
Ludolph van Ceulen |
Calculates Pi to 35 decimal
places. |
| 1706 |
Machin |
Calculates Pi to 100 decimal
places. |
| 1766 |
Lambert |
Proves Pi is irrational. |
| 1855 |
Richter |
Calculates Pi to 500 decimal
places. |
| 1882 |
Lindman |
Proves Pi is transcendental. |
| 1947 |
Ferguson |
Calculates Pi to 808 decimal
places. |
| 1957 |
Pegasus Computer |
Calculates Pi to 7 840 decimal
places. |
| 1961 |
IBM 7090 |
Calculates Pi to 100 000
decimal places. |
| 1967 |
CDC 6600 |
Calculates Pi to 500 000
decimal places. |
| 1991 |
Chudnovsky Brothers |
Calculates Pi to 2 260 321 363
decimal places. |
