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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 #1100000009054491639 879 digits created 2026-08-07

Value

223939879878244684705617431802354880316972930469723282943208186963233455736471698718190610607216207416945137382915604111494577505353196151718821555093750227639054119755929202847115664878364805695626809924254349385927933516051354029437576522641663163821472020648640744084310767793904904523902665879498803232032007933707559604394094130904650445228650341851977562537243630760641341848646895750759473101613101137827891918940884061115890657593399898949426855459212887201454617272550348374008977998281908712958983320069351989880911467862041098727831941702636109617393057381920639009183319238639681625824177532138612837587769215198074173132865446754367002863528504870424699218334255997182496655308996382398595991513918035105441430784312979214919425339370637800554699459293732626993252762882461079744161184767004437741537889885387066636249146624278496171327645483527851372558849387829749
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 59 of the certificate chain of a 1,627-digit prime (128 intermediate primes).

Certified number1,627-digit prime
Certificatedownload
Certificate chainshow step 59 of 128

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009054491639 --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":1100000009054491639},"decimal":true,"detail":2}}'