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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 #1100000009042393947 1,244 digits created 2026-08-03

Value

21114910477609837590292215768820597048010526700796461630456357215806363937463508709726811666993449682279441436196341300730632810333007530854778884787055466167024450106631614404999604830314440985647140445769179532523040262745134419420695212577094999421375051938581800566162463283771623348716603216927021712537101131427090134977066698648164612905751883828909581972696487595021327712567201624771289906468562942020785582543833014312520909638671661637177969278112426346200742866383324728298895633760548527296485940352353801727751372124303344239438863949156331798655294611011218403545133071472228032816844744787656093357232378769478330560793956544876245577846849593754605737051783652623626566968141928596803839605827402533494007977420010910155563149894143027739704486321035019354884693806947895007598607603420630532531288009144622044656289038379719696966904064434578282803827893418400513863805261741089752333614394688415067594739242579071429971432620868163398727794403897161879499613939611471352592090239980149525538879921819898178363742634983013620437905053988999465873521522604164399488607662822016832154734160614574792542324573284528073718326482932104981588134157236959601226562100784210297729141545919589272304008318489089523758503003234778493157
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 10 of the certificate chain of a 1,319-digit prime (109 intermediate primes).

Certified number1,319-digit prime
Certificatedownload
Certificate chainshow step 10 of 109

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009042393947 --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":1100000009042393947},"decimal":true,"detail":2}}'