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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 #1100000008549031175 1,212 digits created 2025-11-28

Value

855776163435362729322121026294491757881777892197385509720327622526711502752946171637175175207045375236518316486498004799092613459653977372850535528323831442362853499979810261296054111162777215814763256247939407333175152045813734307643474915826352257785918133284608072784763983174113531756372174609131190701958822972597112693468344213218383162423030207649299857495748122793833424943329041193588594469668906542165299592387646892847390367523063491551213742387804016250090832739875898526156758560291725726281153870838515742711753486267361307945747079039311458102295026052749187768102225649705261664410567993864691972243295278782576828834303193532169572688485238922511348753542059474029676064599143032524574132771461359285907696409469144131748376473971469315101125583534814704095473453965420599615307385166927626821467708617263495922357502019538734470737333447135907152491341698805411447852500033810175292447876696971359268459956158205374727063627061764930500938285324533155347190292092846305759785896635317005268672059312793593436839439115542584427842957862674175242214039943356974063960158575634532939824178133046092436171737429253115046931928673595172553602170084227257355313660356860799932556074320763565667161551
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 80 of the certificate chain of a 2,044-digit prime (211 intermediate primes).

Certified number2,044-digit prime
Certificatedownload
Certificate chainshow step 80 of 211

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008549031175 --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":1100000008549031175},"decimal":true,"detail":2}}'