factordbrpc · fdb
Sign in
>
?

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 #1100000009091155271 1,213 digits created 2026-08-17

Value

4388839206250980309953537325172887226172136492462603829676713759027738705601806590020379720838066787387883233877459093575449489304255605570840622693144797038058336821091528986661363602777906365932519470644295543491727824905108869212628725896123884756969260595393154325254513105077520111213792265166528019722863081153862860242060227454805431045244438058866398273019511709537223103501194879477001839228900779575222714317997730440845989715112823707015077293549039059609114420817452429317999966954297309592203192636915846113232935905015794788783446992852524011823053947391133488690016084610389194076640077159919648980028857776556739101862811264910025625737732333278638165799380832198752438645657999570779981008085296705074584195326495377835898276768787547550129810817904164291450985899059311151039699245969254112977082019293499082354775987741126879975943106047522568618868702285322868508855158842233154211193629067959421746985436925719625777006780057836729493784746690771345188521468927447166306904938726909422428792867104446158394986268573270881655781766426810893138188119643186456319063207649662015559902073381780142373792280006819802894892634411513286814190615436663091329446936980302239951511731402828739654885847
Permalink
Is factor of

Primality

Certificate chain stepproven prime

Proven as step 72 of the certificate chain of a 2,086-digit prime (166 intermediate primes).

Certified number2,086-digit prime
Certificatedownload
Certificate chainshow step 72 of 166

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009091155271 --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":1100000009091155271},"decimal":true,"detail":2}}'