factordbrpc · fdb
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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 #1100000009008072398 2,621 digits created 2026-07-27

Value

17981965480706620042519579465271417693743699358438215406011470247956341233076390745554947339992638365948279850619804992041563866639389034244360777950272729375116815115558279609810091541103094150535492050638015571462963502462962689342875760524210378694683559298246472201729734412014539563547936640925972053068905557920534898916338134100515831627052315863209598359712425871968993717129383585705299117185406071239004027529390085487203776111435573367204926514050635140639835952771726825247573336820696315331844533786306442549572434152023160412919753978479984060162005671976157230012528276002949866814529048988387354956511658999897729430746874765145757496125056800247398557172254731841832008581509267853072905049147301013977638074047484591396005758543285337183669810584177095951304704738293183778963389669558716887212587230895537629967166796923640090318842918469978505308620265737634410594705311577864231171414573924187341664248456264250521641482634590218767305549866293633358391754789384876792882286762140284168880726770424235068665125354982936664163276557821227432377536623676348515071333718419947592148485640225894113883311676050384270545444505667797845690429707931464999171955089066310774292923228679965383751372614116978731557579471720624072749811385204247020519372524258687353343520173309549474444807849651698901218013094217634548314902534655812793069125120819101734390165976415491702270763424727678443503892651951952329144844433438976212853822542366936740443572743786107514174014496420142717842788776720958498857219157620556327900837674133726184805487083689550999483528680539363140030680929549412671944464823682744773044221842985980859904989016002371263760029867572617076117128061059689100787924315118071747562453791115224848086047958009857153205146704287388258760696809426103136613724021982342793835628425190917001229496427331676459741013583335344327753999089940908214904422094012139228016557617406340791195051087493345918872482078677027404722679268976480616992757938014195566399722111173564442022996469476910347009776143364155161266464368559618520814480211131342815454182243333763455556900438156996329601936727629333826648435667460399520146209967181819625873283603814373006089938158230915756588435907748163222057261684967635242996262777883995192238408639161781684408143573918156287599498537553475021738225201506403325703000085124735695675155136626619975260095914632219903881288558849921111984194988985462540790558055768783349690509181661279313903273262517878830780636300401994511858695951445006041944060633363691380677548325342819365940773458862022927828493155603546445995724751324584827544910894064519497217192238563
term 1921^798-798
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Is factor of

Primality

Primality certificateproven prime

Proven by a stored certificate (2,621 digits).

Certificatedownload
Certificate chainshow steps
Uploaded byA.C.

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009008072398 --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":1100000009008072398},"decimal":true,"detail":2}}'