From: umahf69@ic.ac.uk (?/20000)
Subject: Re:  Formula for pi
Organization: Imperial College Mathematics Department
Date: Wed, 11 Nov 92 19:53:35 GMT

I heard that you want a program to calculate pi with as many figures as you
want.  There are a lot of well known series to calculate pi,  for example:

pi/4 = 1 - 1/3 + 1/5  - 1/7 + ...

but the problem is to do the arithmetic calculations with as many figures as you
want.

Pi is approximately equal to:

Pi =3.141592653589793238462643383279502884197169399375105820974944592307
816406286208998628034825342117067982148086513282306647093844609550582231
725359408128481117450284102701938521105559644622948954930381964428810975
665933446128475648233786783165271201909145648566923460348610454326648213
393607260249141273724587006606315588174881520920962829254091715364367892
590360011330530548820466521384146951941511609433057270365759591953092186
117381932611793105118548074462379962749567351885752724891227938183011949
129833673362440656643086021394946395224737190702179860943702770539217176
293176752384674818467669405132000568127145263560827785771342757789609173
637178721468440901224953430146549585371050792279689258923542019956112129
021960864034418159813629774771309960518707211349999998372978049951059731
732816096318595024459455346908302642522308253344685035261931188171010003
137838752886587533208381420617177669147303598253490428755468731159562863
882353787593751957781857780532171226806613001927876611195909216420198938
095257201065485863278865936153381827968230301952035301852968995773622599
413891249721775283479131515574857242454150695950829533116861727855889075
098381754637464939319255060400927701671139009848824012858361603563707660
104710181942955596198946767837449448255379774726847104047534646208046684
259069491293313677028989152104752162056966024058038150193511253382430035
587640247496473263914199272604269922796782354781636009341721641219924586
315030286182974555706749838505494588586926995690927210797509302955321165
344987202755960236480665499119881834797753566369807426542527862551818417
574672890977772793800081647060016145249192173217214772350141441973568548
161361157352552133475741849468438523323907394143334547762416862518983569
485562099219222184272550254256887671790494601653466804988627232791786085
784383827967976681454100953883786360950680064225125205117392984896084128
488626945604241965285022210661186306744278622039194945047123713786960956
364371917287467764657573962413890865832645995813390478027590099465764078
951269468398352595709825822620522489407726719478268482601476990902640136
394437455305068203496252451749399651431429809190659250937221696461515709
858387410597885959772975498930161753928468138268683868942774155991855925
245953959431049972524680845987273644695848653836736222626099124608051243
884390451244136549762780797715691435997700129616089441694868555848406353
422072225828488648158456028506016842739452267467678895252138522549954666
727823986456596116354886230577456498035593634568174324112515076069479451
096596094025228879710893145669136867228748940560101503308617928680920874
760917824938589009714909675985261365549781893129784821682998948722658804
857564014270477555132379641451523746234364542858444795265867821051141354
735739523113427166102135969536231442952484937187110145765403590279934403
742007310578539062198387447808478489683321445713868751943506430218453191
048481005370614680674919278191197939952061419663428754440643745123718192
179998391015919561814675142691239748940907186494231961567945208095146550
225231603881930142093762137855956638937787083039069792077346722182562599
661501421503068038447734549202605414665925201497442850732518666002132434
088190710486331734649651453905796268561005508106658796998163574736384052
571459102897064140110971206280439039759515677157700420337869936007230558
763176359421873125147120532928191826186125867321579198414848829164470609
575270695722091756711672291098169091528017350671274858322287183520935396
572512108357915136988209144421006751033467110314126711136990865851639831
501970165151168517143765761835155650884909989859982387345528331635507647
918535893226185489632132933089857064204675259070915481416549859461637180
270981994309924488957571282890592323326097299712084433573265489382391193
259746366730583604142813883032038249037589852437441702913276561809377344
403070746921120191302033038019762110110044929321516084244485963766983895
228684783123552658213144957685726243344189303968642624341077322697802807
318915441101044682325271620105265227211166039666557309254711055785376346
682065310989652691862056476931257058635662018558100729360659876486117910
453348850346113657686753249441668039626579787718556084552965412665408530
614344431858676975145661406800700237877659134401712749470420562230538994
561314071127000407854733269939081454664645880797270826683063432858785698
305235808933065757406795457163775254202114955761581400250126228594130216
471550979259230990796547376125517656751357517829666454779174501129961489
030463994713296210734043751895735961458901938971311179042978285647503203
198691514028708085990480109412147221317947647772622414254854540332157185
306142288137585043063321751829798662237172159160771669254748738986654949
450114654062843366393790039769265672146385306736096571209180763832716641
627488880078692560290228472104031721186082041900042296617119637792133757
511495950156604963186294726547364252308177036751590673502350728354056704
038674351362222477158915049530984448933309634087807693259939780541934144
7377441842631
  
once you can learn all those figures, I will send you more.  I tell you
that the world record is 40,000 figures.

					Nairo Aparicio
Xref: sparky rec.puzzles:7124 rec.org.mensa:8076