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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 #1100000008676271923 1,676 digits created 2026-03-10

Value

39963316551797898814788515225092220577686512635985096189542007585577478097648890782160743258698873336920377371313553971787018446284670375073949909311051559396922068316552500671771935661932794878629052399859465280493257770747425199495978907637343259057628367896274910217560189409030395032132311503424525104410967241241156814719438313360631451992151808193410436236682655558903126814868451458956887074016795892115620873420409949859688246394783277581370442684101126544951193656440965225238657533216607940699226110476076534797355804455345083421967290619142500439763443392893143719127531415954349089989696754062027840543445970787092219075164928252841551261982595076479178555293467122526401272817504159229106819804801050605938643173857669607449192371252150517110008384177673783841971303963163493626492925103423132735977522920283098680963900558836007560810549345088492138381579626096832993913407871821077914041263386164877127370060087041348917165787688192812714797784690070050990351052576918303711897637990769966040360861471013580375092514987236690616285706145702788030603020328842197289895625489704233063568779366496523431035177015058611008746845813374719793772385224157291048900312535445387428108840533154411394199740723166211034351214034907094253056016714649909782494900799058899587494046415658017298182035295555080336885657042041573099181194912797016186496047550255606540976805493317157659225930722743516066531065843523510574468779828093172182620475845402473353330952221614552739569797891802706923955128769672627883455422990709786925081574287004503879042179033156423671688689171411859172384387062543908106046454627027927418194526912568143308727679726741166723820526432834516598021
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 103 of the certificate chain of a 2,915-digit prime (222 intermediate primes).

Certified number2,915-digit prime
Certificatedownload
Certificate chainshow step 103 of 222

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008676271923 --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":1100000008676271923},"decimal":true,"detail":2}}'