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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 #1100000008729257051 1,528 digits created 2026-04-06

Value

2959847239165750071281563927340755763483049055124162300603380206513498726868546127344404632795575763623465738232774572143461520662758952349588490514844904227643270980119346421821414588517087999306963680788828901505020088058693105014722820836129229617997515091488657380557775638149768330425509495484647541501863491395678714646034184278933845300271976404936366460091936019173752311678506668447626804177825253592581746858955709979358426440493213319329648703124947523708146985261285323618780155772448595423535499243833815795948739207985007284875701520456843471493554032113209273093099963811501859242798207469210870428178054534500667176820396482368189908291829014024678634757864250364477396080211233478635762519884426471220160422510468995365795824627906400286973678207010024789198508412014860807216055240419191270171611747013292567207206403428890886057951379744166741398393978534419516796610396503674558897506879169739373283153986994880270317548512287616437933945196502670891136032953034461314678403808661564736334804240249034182139766656899945531878073481581525795567895818326145636400556189670652114906560567616156256025673501577908458819293295784755372611085743468569072409572191743932639885334466904704631474806544157426609778671799654669477476527764240959548833275675598453130049336457458844328835595033036503074844197930373642227629883563200650961184680017673765992509761784585291870675135158492062961640690435635610822183327037733314599949974368254479404249492247350850208054443020571513041438704374937460105749137961229109299
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 96 of the certificate chain of a 2,785-digit prime (201 intermediate primes).

Certified number2,785-digit prime
Certificatedownload
Certificate chainshow step 96 of 201

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008729257051 --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":1100000008729257051},"decimal":true,"detail":2}}'