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Enter a value, an expression, or a term with a variable like 10^n+1 to list a range. Switch to Database id to look a number up by its stored id. Reading never stores anything; use Create to add a number to the database. See the expression syntax & functions reference.

P · Proven prime
id #1100000008799243221 3,654 digits created 2026-05-10

Value

658535039100295921281576639546400970931352330083325359490442847377504118511820555382088829727298640524460773255429233470726912710391106308820959062604894852994612651301134860972323094989836064355068176836757977828182587445545325817152610690967155195477013933785963233277911733027674817241182733021563131892547701076323647117598713286143264954224059625380687409572274844116631889695870337440045835588370027731400597535265700704207912701036497732915486906994151323945068296943619955316552847820545706976171352023472617290853734811964137979298759099606845960485625404917634810237194987539901094483532152759722358042988123213208508980053930319645842539142529412220118183545041178665567077521468125747991999126949474992241740125051545569849539629225368399121921115600219497829031041949016327876840095559524472076211141392861474528184911445979963902697804126405208294784476761303589926288881831882657233141047527270255291306227126531857921486924590292917877790545140038342670219635446169182269185469479563460645730808109708562686204762536675724225843250516789791457617992753926387813574212562750329511000007437209188358833293519511095691926790701512312382388590738199930763963100960829270725141124802758749139085526549463550349169344916250144326083284627957424897299848194625296025695716900539604810076113527535049575521627804155506181496208249973156368019953587883702910861731241129102715449046355927460569986211544191753034471513926804470116368160197615696534204768538070942184595271441884273967915497134024187229754691572407141781981534375822245236282910426754413527303501261230881754023345557533667918603974772952871583351252274372016348691145882511395987424810339852177527180833723590194766288279112020579728585499225592809643515502771777713186281506918519265951068823273658869750570516180892027566197594457157802080731463480010765121519686891743097646213232962664421035960366191196466213193678207735633122352635574632001904962509344131476633530257844610152129160572280203279544505526608913630179571115032624466404009354461707558969309255511135787751462684310725422668873293488969253738556330332242888965949813208133880733280142691769113128832021863138209366012405170107214482772848547455717115664858046338200581411931063417753088329466863152850202500304023161236377301776506243057893040104463575363469864036965793113163444512297243085042933564665087013775337438179732687789459019405718382918866167340558769102257277578405932777097628255763238543443299040540366542417658969693589862194333420803246530534629624627536891032276570628818463778144666690185299925373537048191452020563638361481481161177210341737902336854528490229987955923217968608592270607267881633868602626913688198149097409499901810083143099166723121590926187515093877388480795475994336815213669156753171466856900682351906241736035939129373447635433819811457866048739224938416459843148865301044005409397827240377751845028272897683115974990476944617480109942549985079645535646701393377597544916386001107581859223019119454579118168361884481391604063326275273102319210244588657954248929126940497791289874221830912372022781592359380785731700926506752783314031079302625422605719006953923462423757109741154180565552047026314678137881665755522121089254821336538032851133136301097084361730015155066728227126311379942959440993457732203974438558893925694083247677010870094337180917833764781763778230505135764837251995108215253383294329910730549406703052302152336269337284798714233433169649637919011608419547981675546505782403646737767470538497554394443289622808445044386670704075141489551666107187457063276164244823772925452962439456083733612414871492237981908912978463508168030461243218532424698224751
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 17 of the certificate chain of a 3,883-digit prime (240 intermediate primes).

Certified number3,883-digit prime
Certificatedownload
Certificate chainshow step 17 of 240

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008799243221 --detail 2 --decimal
curl
curl -s 'https://factordb.com:4059/rpc' -H 'Content-Type: application/json' -d '{"jsonrpc":"2.0","id":1,"method":"get_number","params":{"target":{"id":1100000008799243221},"decimal":true,"detail":2}}'