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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 #1100000009117856291 2,241 digits created 2026-08-28

Value

123960053749844039969727675692599525198465756522087714899813214355431932168487657303819322976993542550853464720839044436875949869947397223347883050614636289159885965467512088591969373771328775248544659015503585558935357977905226942403851100130154771894530645222725712728713801550918128724765217455030358140561437593520691752399751216027008530932345105617893025351670866532750176860820337474076753848161087398713649181906831017431011485601440536044927236607102741874075008824226118406038689656320986263849198925842296463710701454558836030481921288166568031769594993586385871664333831396071332228993303938051821173102960891470723001262221006247837676860436184249968509724013789943627884578526565635544383684190687313040183518256207405894402476725444351334659877881354337076546807065237476934342594483575282849881377433952820033244753733228676508623602499386429987056101215947858850108296872997965732315568991929936471288268501309656494933918038652120255675571370749364695158919805582917498857795928961349770084047512811791604035061939433485308364131860485720404873830383671098684299036610288679949130213756631929401840227463953807803610424319247920906591003870874412358232514580737813995241933968395988936150838090540866234439568848080018336303629899441831963714340208261187704555576463000897027926881629958459192389914662659908984658528917729783915789848844331269139147558307066259452501083369549084209385201091707682005547651677482371147529720978978621226356100961306052484790683979890709467924885815525484001540049605500043210413038276105790774965051085694522884635138385228352289728476043506160018327305371606616212013688517553612289025388476042891450960815510268258154864775009210031658363029151749172628090103190154689492759593676546301105792685568953510793548978324871250937015699675915986109705697588264548233811593839502230691720714395115514291393768671031036525546230816644868821425234582719717446756619081946152144131982900738613984919482360731259554840715782988118268296919760260683265881435578531032397959320172286280213340317595312632761180407406981928611147999780083364618232230211111899405381073124796092639404798675528369496755277980186086123395987327945406088013416386449865182900163935886465932546739353056720183322519618253
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 85 of the certificate chain of a 3,049-digit prime (315 intermediate primes).

Certified number3,049-digit prime
Certificatedownload
Certificate chainshow step 85 of 315

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009117856291 --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":1100000009117856291},"decimal":true,"detail":2}}'