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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 #1100000009057962979 2,473 digits created 2026-08-08

Value

1966873589991759091092845781599138466468832779334146118137136604027927445094766711063752190236499510686646523938834827177568223219191017407506397412535172161927484196029384919559840414818496226618404188871930624732042406304920015269007224755997908680143458693088055309913994479117232974449249229654282041242294502070635339821372167687176030231366755383594898654048336647099224080735913270567208668356667183132406598861040942490729132437730686672774838601851797820933751793397737421237310334851119862607762412277084848101396431454651793049987850021664313478316363807122637631444490097871936670389404671250490139828098718289959726011176810870624506424492512507848255580167514811639933830097833598727004735430391154385291704282393406359458402176186442549830855905219989853234204870802620427432560832526575038592730877850255714561900727420369720613607209747234859663309462858298090973184643041463861016423753436866887229566558641088641399595905306588841000516425523343368381320907729047286181901567257442030084651233533907611710382872383647539746026224011643679020105431797953608873630768189823221211141956207257833099044490476646712520861810394321031232566863032937435415266447159344268424790522610835973843321475042010403901462173218626340525105076436949163232891666330424196400550601385545405036619367517917169834266370166856063636788778597887110152051420212782093768229312711834056571048509547651704331980374236690479683113336233116607744775986329703092427670788824417505659512998900868408046849898783813559931920696499794581111429512604175510083671167790187954764837605378647826214960655412015415482088058130080160169975960408306259736063653336442869339275375166166290564015255859180992615262474931821155489589263400844726844958425634258745040316293087426922677720049150512938739944883868896803964966600429481357585486190606575201121314731267863675113046226418960615843907213954892188214358520697950449991793376628485955295983786971099228984363287649532144984242309575178189232564536840742508052690354172790822091736403163340092992027853217802679169775176013051801513356915693282048473555384567511293870421358480037069836571654816792280571889475447480007721141179166181008088597909741689889601355010130434413418747955005266969479234324682192819091195798612172542879054113895024193177396085853523334149279546766165618203501332168076878195891402211776213461232278354021250173306407883310934184185925815189658859342910967777128595730482403287157643074452340182660843383356491
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 13 of the certificate chain of a 2,600-digit prime (197 intermediate primes).

Certified number2,600-digit prime
Certificatedownload
Certificate chainshow step 13 of 197

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009057962979 --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":1100000009057962979},"decimal":true,"detail":2}}'