Compact formula | 139261020716[102428655030] + 30734165392[258710296161/2] - 460132521692[138873731225] + 429458969776[154222741143] + 97994411428[232262345177] + 619371159016[520685905182] + 287231720456[1152667749293/2] - 779603292504[1047665713307] + 1256510485568[1250614473568] + 195538919288[1280283860113] - 385714443176[1689015353762] - 550957691832[1986594055282] - 366046292088[5142102426318] - 618539943784[7587050464193] + 1279879541496[10055045415142] + 72233867428[13688849577057] + 958453212496[21856860577557] + 863236506640[24632166555862] + 325737223408[27132766222219] - 514538001228[55864783210943] - 762878011756[106851921608307] - 163105808072[127528611030443] + 269482428044[169838669284032] + 176849814576[192793745108783] |
Lehmer's measure | 1.91847 |
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 08 August 2006.] |