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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 #1100000009065129771 1,106 digits created 2026-08-09

Value

20461263439633866476370738018466456338405770048591045197950743304957819551303110096173432361740659583259413185919416636598925838181469749730161793996647886795175278605959774381346900917212411585790371821884282212816795334069538188971944513267672872988381205037638503585545452489837060566933207936779807676352265397854868816271261410889900997617602149538922014136439123923544274762361750557453048279180404982285461555242502038638371751956728704389388674820180789167601277459188592008204762553984056960125855149410017494886541020454488574008848226677888482633012997723618687412777466419075752505183091112236518136614734799795518361068152260169252990560978769227748193899776543939521803153279149204718102271992398279212687033820763090935350851927509276138567015548562520410062893803393100467301142437091608943068213156787710052893994556542986403513507739195014558515399988375630618747879615757598866382634931904743882516376693590970460870334133122151078886813247708612416351812670272117139850373528290278155310850446369732661113720660451891882126964705980665608373654253742151238623933146614334300991173546647
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 107 of the certificate chain of a 2,485-digit prime (189 intermediate primes).

Certified number2,485-digit prime
Certificatedownload
Certificate chainshow step 107 of 189

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009065129771 --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":1100000009065129771},"decimal":true,"detail":2}}'