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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 #1100000009057729086 1,621 digits created 2026-08-08

Value

1210831262678358983672520830246539462685141006267892892201163000210240783335049882252822495431064562729713784510193324703744304040085998101521180893760932151567697991473228419007653023020117254266526070395375440864807325529730612839736475680330776809846154918635269042731507638412378301719143119952796603657680325078725715859776035109092598639420514580777286762971376562614157941162083339527587723184597979711742919190607026860307020375037683065259466044041610556489177299892788935313458190861887038758770618187261007844235428651285224099229085423289065766382441302916340070621361642579201449430397557477311660846266648180775076939119649326445719804923466413356985800274680480221873050288219305583998587743564288831819791280381683911928302265480297154937862877878500870984697317751989412339861206117384374997643267929027701415468768139546594371624662036377670709109716644135543091114989270262339532617620233879952820392386682380646198996068817999383243877569289052104854235343820787245941874094657629353890380352458960681677084815198779666838816460985283072814799230363903409187236227363363211800929695016825761803395557844455457947849256663804512440374330575705916221890437432267240167090814298300764653908440193957326713344542435340971072608650682190644186586559371909612443197282763111624570529155733371817953634051701726880022408032404190097668869700136542232843272974032028700340554090973404124626763557487857662699619454986886675224515578768965536040850443139573634801997150263164941726292921654684464751725087761287717991104753428410144121500677929654158153878035469225877882285034971290425908103838313185197226119
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 5 of the certificate chain of a 1,672-digit prime (139 intermediate primes).

Certified number1,672-digit prime
Certificatedownload
Certificate chainshow step 5 of 139

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009057729086 --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":1100000009057729086},"decimal":true,"detail":2}}'