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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 #1100000009057950490 1,853 digits created 2026-08-08

Value

20709823433149778861819005375608652866431618211690468634937745182472143442538676617650452912084763324083321570555829136769022228423294251899022981353443957263177117115352961791674457228753621123615727181644858429426905265412381323809812176076647440489261638052229063865685094445943963726128974367226684133890764624482087321620212206111018926967640739556497695250243164342291393104718595537478878699216702532170992314014070196872948944999414814586537947108810782794910581077189070665665254902760018475763693158504114970710005068058720193909035821887238027460877470876480129945737372283073285140613138547196243721443885785890454876793687883890478594744289625621065366087512302575953110564690885040280312801975281887368407796713523152191164678812672254408450339655275356365784841040949866732683063186555331553598955472479832582593824232900361893628842932007751415052873679813324902348635474910708448656345191934537045776225465668066268965987626375712728627960618684307143218621767558777712173399672697461234436115287735657695335537515165276050838978883305206032599651119662215556564231538192507009632984904601655412401105386589321142180933995851028123978395894886447378107826229952222533519154759303867394072914495901776272422662406723967063593756689823094851342191154736089729456919957973628405861034550467790718806209293209830823153721616237656085268006912972641234711250924691047614023687447938286506970170507120724675808754688407198024700584378084637332976374123093551599524477064887385721962654306914903603114624911860375280012427664961005513789705850493525339631363726386355729976584558931299396400924805268945535248853779925137177594041622944228578531794243379507739200966972751588804468019942515499041429186444663479814747947452879670686502234326254921928176954508027860825597327304058108712543004253913977691214518976642591997935478130582649837813
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 34 of the certificate chain of a 2,254-digit prime (178 intermediate primes).

Certified number2,254-digit prime
Certificatedownload
Certificate chainshow step 34 of 178

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009057950490 --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":1100000009057950490},"decimal":true,"detail":2}}'