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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 #1100000009043400383 1,242 digits created 2026-08-03

Value

394812660889337235698358199071997670247054629454320439993980875773361466568060448544406262164434802894591788047928928598311457979140704263114815704575330169077358652398345478039597051443486327861379708444965140465396966843843000225036906033183895692522177945284448467194978274713566464527494540239793210291571720035130546268632200071708822175787359547478892200311780398817089646755387811288667510777413778191258824043546720873611364672752699963852844560322191129985422999901970866043910711354989418051736755488736397207882359836124279529051327548108701329515315528616939815379001385894685561539955509569888345866523241504943306785845869686081639448917147248153500511402943965168912398201370987852541884072692391752259510852197197013628641579773576808532636347539539569588743875081550932155407132901320140289440022028317116015126536015029121836956530550367539898647510597487440963863916322473436041543801508110061108362182987608688526574311161105145628536082053776211727326309748941613984452564697415813447339194535849031076598917994504723723694188070498494519661159380575437500420405104194327492679849135896661653319277360594098231288456166266477983525186405865014576871131805187467401228676854517043223072375581204645935990748530747813251051
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 11 of the certificate chain of a 1,359-digit prime (108 intermediate primes).

Certified number1,359-digit prime
Certificatedownload
Certificate chainshow step 11 of 108

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009043400383 --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":1100000009043400383},"decimal":true,"detail":2}}'