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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 #1100000009126645360 1,271 digits created 2026-09-01

Value

18919572835569656511202899524447144100098590208389538097054363543155453721164444402951249559748677963716373686198018330451507667988195830179209913799100287918730016507472201796844311322266996856341262579605874912643698513629222432138525935902270046621398368716574337605291227696489601292938600634444015860552654924274510664946423781320824684645231804557976139377328103443142839131240463601011879498217773221879221438822501843483936091865362347101226237430078892944043269541517284641196836740041215475145971452132144817575249974179116391008981381421070128117357696644332499390177567088673718103814179419970200203514405506838583825737620307202730028666061200725208795506489715885273669054886321709446853648846554430245164233599072725738330174220559974583513886517009952300831957043449154517101155447697925330786926440470661380149107014949604950169274038423837628841369542144904910864635412230037611395221538250115696296122996305123521600009791591366332647478310232757859425154243343208846905981898070973172793592183049959117781985655126125687043809816934507464500040009352749082275817411315738060494134956668157404603376915303099923163911119688914023609256228316173761751354810526513824204101407447639104935678092042152906232242442151309558914066728627872800613831318572413
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 178 of the certificate chain of a 3,110-digit prime (313 intermediate primes).

Certified number3,110-digit prime
Certificatedownload
Certificate chainshow step 178 of 313

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009126645360 --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":1100000009126645360},"decimal":true,"detail":2}}'