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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 #1100000009079730211 1,238 digits created 2026-08-12

Value

38409702139724768780101918834019044304627853386503569091032165521485287170403465260627385488557780777304828670752211527819907822689361806512830562238513352800332025520803388197334857528287246215532380088063590801420893536127187540527553454380351969694216290697269583990606184950259580307626453180251230301167231764044892989811122805349483282919489346307712488828485492704151298121156911983383005691518030858201455673779495695908413338628110018375811909589198842327533505089023924783551791934059641217780121964824797640598683902037455119468493794935843664659790036048706685263356172549949140555278222561825912210008178224593653796336008840310258196616714100991280475788616836018486463901388702582546641653075705397809501713441271022445624080883435549016225588377301757890683358184399952024826341468199709472944728403279890829496485435964453682031646490822319966664589454213681064790682442568246200094440696367997910471203018253914998772053727123349598807821320974064325534201447812430189447237841858507843221223632815026841449554745097504973315393222490584012740296116967614001852140390987364393023669802337449572554313942490017032058292988256403250064938979596905835595758014131483792323214746797757580684521307911253489963034682877803383
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 51 of the certificate chain of a 1,853-digit prime (137 intermediate primes).

Certified number1,853-digit prime
Certificatedownload
Certificate chainshow step 51 of 137

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009079730211 --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":1100000009079730211},"decimal":true,"detail":2}}'