National Pi Day

Report
Happy Pi Day
Bulletin Board & Program Idea
Submitted By:
Cameron Hovey,
Minnesota State University, Mankato
Happy Pi Day!!
Celebrated on March
14…
The symbol for pi (π) has been used regularly in its
mathematical sense only for the past 250 years.
The letter π is the first letter of the Greek word
“periphery” and “perimeter.” The symbol π in mathematics
represents the ratio of a circle’s circumference to its
diameter. In other words, π is the number of times a circle’s
diameter will fit around its circumference.
Ludolph van Ceulen (1540-1610) spent most of his life
calculating the first 36 digits of pi (which were named the
Ludolphine Number). According to legend, these numbers
were engraved on his now lost tombstone.
In 1995, Hiroyoki Gotu memorized 42,195 places of pi and is
considered the current pi champion. Some scholars speculate
that Japanese is better suited than other languages for
memorizing sequences of numbers.
Pi has been studied by the human race for almost 4,000
years. By 2000 B.C., Babylonians established the constant
circle ratio as 3-1/8 or 3.125. The ancient Egyptians arrived
at a slightly different value of 3-1/7 or 3.143.
Thirty-nine decimal places of pi suffice for
computing the circumference of a circle
girding the known universe with an error no
greater than the radius of a hydrogen atom.
In 2002, a Japanese scientist found 1.24
trillion digits of pi using a powerful computer
called the Hitachi SR 8000, breaking all
previous records. It took over 400 hours!
If the circumference of the earth were calculated using π
rounded to only the ninth decimal place, an error of no more
than one quarter of an inch in 25,000 miles would result.
”Pi Day” is celebrated on March 14 (which was chosen
because it resembles 3.14). The official celebration
begins at 1:59 p.m., to make an appropriate 3.14159
when combined with the date. Albert Einstein was born
on Pi Day (3/14/1879) in Ulm Wurttemberg, Germany.
Computing pi is used as a stress test for a
computer—a kind of “digital cardiogram.
**Reference**
http://facts.randomhistory.com/2009/07/03_pi.html
π
Celebrate your own Pi Day!
• Bake someone a pi(e)!
• Have a contest to Pi(e) someone in the face!
• Make sure to start at 1:59 pm on 3/14!
3.14159265358979323846264338327950288419716939937510582097494459230781640628620 8998628034825342117067982148086513282306647093844609550582231725359 4
0812848111745028410270193852110555964462294895493038196442881097566593344612847564823378678316527120190914564856692346034861045432664821339360726024
9141273724587006606315588174881520920962829254091715364367892590360011330530548820466521384146951941511609433057270365759591953092186117381932611793
1051185480744623799627495673518857527248912279381830119491298336733624406566430860213949463952247371907021798609437027705392171762931767523846748184
6766940513200056812714526356082778577134275778960917363717872146844090122495343014654958537105079227968925892354201995611212902196086403441815981362
9774771309960518707211349999998372978049951059731732816096318595024459455346908302642522308253344685035261931188171010003137838752886587533208381420
6171776691473035982534904287554687311595628638823537875937519577818577805321712268066130019278766111959092164201989380952572010654858632788659361533
8182796823030195203530185296899577362259941389124972177528347913151557485724245415069595082953311686172785588907509838175463746493931925506040092770
1671139009848824012858361603563707660104710181942955596198946767837449448255379774726847104047534646208046684259069491293313677028989152104752162056
9660240580381501935112533824300355876402474964732639141992726042699227967823547816360093417216412199245863150302861829745557067498385054945885869269
9569092721079750930295532116534498720275596023648066549911988183479775356636980742654252786255181841757467289097777279380008164706001614524919217321
7214772350141441973568548161361157352552133475741849468438523323907394143334547762416862518983569485562099219222184272550254256887671790494601653466
8049886272327917860857843838279679766814541009538837863609506800642251252051173929848960841284886269456042419652850222106611863067442786220391949450
4712371378696095636437191728746776465757396241389086583264599581339047802759009946576407895126946839835259570982582262052248940772671947826848260147
6990902640136394437455305068203496252451749399651431429809190659250937221696461515709858387410597885959772975498930161753928468138268683868942774155
9918559252459539594310499725246808459872736446958486538367362226260991246080512438843904512441365497627807977156914359977001296160894416948685558484
0635342207222582848864815845602850601684273945226746767889525213852254995466672782398645659611635488623057745649803559363456817432411251507606947945
1096596094025228879710893145669136867228748940560101503308617928680920874760917824938589009714909675985261365549781893129784821682998948722658804857
5640142704775551323796414515237462343645428584447952658678210511413547357395231134271661021359695362314429524849371871101457654035902799344037420073
1057853906219838744780847848968332144571386875194350643021845319104848100537061468067491927819119793995206141966342875444064374512371819217999839101
5919561814675142691239748940907186494231961567945208095146550225231603881930142093762137855956638937787083039069792077346722182562599661501421503068
0384477345492026054146659252014974428507325186660021324340881907104863317346496514539057962685610055081066587969981635747363840525714591028970641401
1097120628043903975951567715770042033786993600723055876317635942187312514712053292819182618612586732157919841484882916447060957527069572209175671167
2291098169091528017350671274858322287183520935396572512108357915136988209144421006751033467110314126711136990865851639831501970165151168517143765761
8351556508849099898599823873455283316355076479185358932261854896321329330898570642046752590709154814165498594616371802709819943099244889575712828905
9232332609729971208443357326548938239119325974636673058360414281388303203824903758985243744170291327656180937734440307074692112019130203303801976211
0110044929321516084244485963766983895228684783123552658213144957685726243344189303968642624341077322697802807318915441101044682325271620105265227211
1660396665573092547110557853763466820653109896526918620564769312570586356620185581007293606598764861179104533488503461136576867532494416680396265797
8771855608455296541266540853061434443185867697514566140680070023787765913440171274947042056223053899456131407112700040785473326993908145466464588079
7270826683063432858785698305235808933065757406795457163775254202114955761581400250126228594130216471550979259230990796547376125517656751357517829666
4547791745011299614890304639947132962107340437518957359614589019389713111790429782856475032031986915140287080859904801094121472213179476477726224142
5485454033215718530614228813758504306332175182979866223717215916077166925474873898665494945011465406284336639379003976926567214638530673609657120918
0763832716641627488880078692560290228472104031721186082041900042296617119637792133757511495950156604963186294726547364252308177036751590673502350728
3540567040386743513622224771589150495309844489333096340878076932599397805419341447377441842631298608099888687413260472156951623965864573021631598193
1951673538129741677294786724229246543668009806769282382806899640048243540370141631496589794092432378969070697794223625082216889573837986230015937764
7165122893578601588161755782973523344604281512627203734314653197777416031990665541876397929334419521541341899485444734567383162499341913181480927777
1038638773431772075456545322077709212019051660962804909263601975988281613323166636528619326686336062735676303544776280350450777235547105859548702790
8143562401451718062464362679456127531813407833033625423278394497538243720583531147711992606381334677687969597030983391307710987040859133746414428227
7263465947047458784778720192771528073176790770715721344473060570073349243693113835049316312840425121925651798069411352801314701304781643788518529092
8545201165839341965621349143415956258658655705526904965209858033850722426482939728584783163057777560688876446248246857926039535277348030480290058760
7582510474709164396136267604492562742042083208566119062545433721315359584506877246029016187667952406163425225771954291629919306455377991403734043287
5262888963995879475729174642635745525407909145135711136941091193932519107602082520261879853188770584297259167781314969900901921169717372784768472686
084900337702424291651300500516832336435038951702989392233451722013812806965011784408745196012122859937162313017114448464090389064495444006198690754
Pi to 5,000 Digits!
Reference and Notes from the
Author
• http://facts.randomhistory.com/2009/07/03_pi.html
• **I made the Pi facts to be cut out and spread around the
board. A LOT more Pi facts are on that cited page, too.

similar documents