Compact formula | 103368092[50668324] + 108543132[99068159] + 10647672[396185689/2] + 20564464[582320435/2] - 77160400[469484193] + 74897832[1510001769/2] - 36068380[1833258357] + 2158884[2420845318] - 64540680[4949475989/2] - 29177344[2701984943] - 30122456[4309606382] + 36661284[5475957057] - 19915456[8579228548] + 79524572[14033378718] - 43584404[112899039159/2] + 1316968[134237866432] |
Lehmer's measure | 1.73705 |
References | Wetherfield, Michael Roby and Chien-Lih, Hwang. Computing pi: Lists of Machin-type (inverse cotangent) identities for pi/4, [Online; accessed 04-February-2024], 2013. [web.archive.org/web/20240204042153/http] [Found by MRW on 12 August 2006.] |