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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 #1100000009043372011 1,246 digits created 2026-08-03

Value

3129587827831465692457598326985179332636131766449813108858941955738566907181116699547122921601387907041317209496014043151314514836995561112043689515633831599568226797760022547677169055499535556886021178699028455981930600725352302448509717995886842421667299033530284984827058604069586729428172734517426595882806673166970317085899542501088686486014004352176048772586189005980738343392602436394393942569609968060606049560850988416028782071384280932949580144747193734065275105435811629742984231013969865382699474074962204340166840910884079829046519604392685437840794510561437275714224876993138205730753782079332870472531957365518847412400889377768434461144039699019443394994408695473700768888253785771241110286626399629787804905048113765769843245983891972842635823610959360883323641791978941298491040449342470342523860581142660492029970811260710202997932950599732447699312968387234859570743313061114062112889928182424917479402078764059155397144887067083523698475665218389701132449681276940428752741974534688600193975610038067331471078205360298065144021338075466431293822654297577274205082811252761346100187413490577761034375563304612533809746644341197566640158019989772745500046887435415746659024748905246775178083584512619188411746719807040889052653
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 10 of the certificate chain of a 1,357-digit prime (115 intermediate primes).

Certified number1,357-digit prime
Certificatedownload
Certificate chainshow step 10 of 115

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009043372011 --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":1100000009043372011},"decimal":true,"detail":2}}'