What is the largest prime number that has ever been found up to now?

Answer 1

It is 2^32582657 - 1, and it was found by the GIMPS project in September 2006. It has 9,808,358 decimal digits.

Answer 2

You have to understand that prime numbers have the potential to be huge and expressing as a number of several million digits. To state such a number on here would be pointless as you'd get a significantly large amount of digits. One line alone can only fit 67 characters on here.

There is, however, a subset of primes known as Mersenne primes. Mersenne primes are prime numbers in the form 2^n - 1, and the largest Mersenne prime known is [2^(32,582,657) - 1]. This number alone has 9,808,358 digits. If this number has this many digits, consider what a regular prime number would look like.

There's a program out there called GIMPS which runs like SETI and attempts to find Mersenne primes.

Answer 3

The largest known prime, as of September 2006, is 2^32,582,657 − 1 (this number is 9,808,358 digits long); ...was found on September 4, 2006, after running a computer program for 9 years.

Answer 4

There is no limit on Prime Numbers, any number that has no factors except for one and that number is a prime number, and that goes up to infinity.

Answer 5

You seriously expect people to answer such a question?

Answer 6

it has 2,759,677 digits

3563569762450767367107634673111111111374609736409716737737630165296`5402----3276141764052`550263961925`62530256-84-01756165340865302851652308538586492516350425416534061850438651240186316433040450452651864508163546350485230654125643086542038654216540826354018635028645045056236254326450186511086540286534186542106425186451340

Answer 7

the zero

Answer 8

7879877777745633231576873453234243231646478787678574213465789867896764533432214353264265475667868744212113653458762384765297293847180324632875462387531374937465283452874356458649865749857673842873456309467394789567874628947845845638476587445632876427354628734562837461436176198743419874687354682743652845284365873264812734618648217351532475486873254872346528736318746587324582734658732627346527546817453457436182428436218376487354832652835638745628346287346583246583256832562987359832567834637286528378326523532875623842873612736487364163643987462839463548778385467284356983246875827346529874365872435632874568743562934756273846587356328756283745639275523876273465638756287346527384568756287435692387459745325672834537354637642834658732465287368273465387456834568365738262987436376582735638563874563562987356938756298734565875678432562984363458934567356394756832562438763746527436527364574623985687462839564598765874265832746582465983462374569839657834265837689732653746273494848756924365643287674362873658437528736538742659347698365897466437565667356348763986529843762873496534987293769532746328746587365784638765872369288374738465928746274396987496574563965487657845692746587345672356348763624672674365273562487523974568394365346348765987356568567565595498732568327456287345687465387465387246928734596832746387487436427652983749653769528735627384967356932746273658745673452734659873459698746523876523745263874653875627438563276592387469238745629387456273562873465923865928374962387465927465932874596287346529438562398472643966928365293874932874546783245687435698356743568734569837459687346539428732874956384276543865938745693287465938745638746758734569287346538746537846528734563874562873456854731912191613287412965346123467823468972364981723641872364872346723687263972362873467234672346827463767249672931846291873496187264182734618273641873264987326428713641872346132876412738614327638743698432684267432643267423698487469889644832844873289464466932456329485684327653298743632874563284563298456328476532845693846594373284562743942659743563249875923475632487632846529873462374856927436387456274365847353765873246532746572845283749653275928743562394865873465872368736462987345698273456832563294563286475967849832456873469327567436532675487934629489563765832469834663845398450304832498736527849635638756874567568956743564875463874568697049870243752034752979872834753485732098274089303280798375098340753048084707887589670986754849867398457584398798567049704866796970965407986576760965687567567545465879754876569803246752934593284759832457720407324700748370320739845