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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 #1100000009084386844 1,228 digits created 2026-08-15

Value

1947748967781898720742844197357592274362597301274827752769588157111331604958870959610885672550387224827674971382587061619998458564582022090727702927870783537260196857992583244750983672489561112141527203169172251864046334193716267150148398859500511015509483719173214340479923803967430890085156385226021514523016396059506623331474008015164001050336586513745696866241020774178917787886608388481352974102175329249501245525376726379991260348013098267351384871913122926600914818267875959540276382668142040964008017867848392988471037361822798676680454116324051431475650056119765845551195953142168663347780044485383117700439098815891749889668894508039814591945079712303652927760127768699509030452756724113511209168781316592374990158997022703358463154931903834215520392979354749076526571052748622345200021830473712107157460727778269239755849273755435005970993017646442186459634469556940435006372587559822271609324310525757592108400060325937241876216082420397186652266800232253653731850146384573536944001498079574025576618691781439751462311170753971478290291508900026744504838507800652125598694184787024830963624308039456371457700380401601128583531766911632055736103681436848008207986752206700260566883459460140323044073892139484939356757
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 62 of the certificate chain of a 1,956-digit prime (156 intermediate primes).

Certified number1,956-digit prime
Certificatedownload
Certificate chainshow step 62 of 156

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009084386844 --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":1100000009084386844},"decimal":true,"detail":2}}'