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 #1100000009028284001 687 digits created 2026-07-31

Value

838443293519691111683853519386838636304505563864477843024993341488537727984400360430304193622965893573131897692157684125440520414387808164439761155343528697337380905603422070299077598443355672917372679262060658302029952270963551421471344068748493717696703635410712688772567043453465903003928498277009720684664966455464990460711929578061311166072004529923932901804130100416872861426402418299803680844753568893325226529183354159842875849267064365652883139277104956201924333069419945703294267561977826491507816982529471626442284739737073478237022255242418986516144090960776222636659863565836423513829126196772496530334249181904761100886002549502429805074631389291287382344030796592161970491
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 47 of the certificate chain of a 1,201-digit prime (100 intermediate primes).

Certified number1,201-digit prime
Certificatedownload
Certificate chainshow step 47 of 100

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009028284001 --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":1100000009028284001},"decimal":true,"detail":2}}'