Compact formula | - 118202358160[112899039159/2] + 85193553324[172946705261/2] + 82673645356[102428655030] + 333910414900[138873731225] - 98810986512[201054544712] + 120737023192[261002206018] + 89285364716[343123176943] - 264335777908[649968883117] + 553238539568[656902304557] - 116252272320[980557665862] - 117721645760[1372432573478] + 322823992484[1374662101743] + 169070170404[1622274975907] + 105197889476[2710120765097] + 646676590604[3761284561432] + 54384474224[13078246979509/2] - 239859547988[17780261434697] + 246894492100[37911976165961/2] + 378679987080[38759264489343] + 491328514096[69971515635443] + 418133705980[169838669284032] - 367068570364[772654028018543] - 257556276220[1948025182233307] - 161391012480[7411710404595173] |
Lehmer's measure | 1.92754 |
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 8 August 2006.] |