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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 #1100000008674994921 2,439 digits created 2026-03-09

Value

252829904877859256206032478990757739805732611001170525148750002426694556959308703850643536768502933439704860797951114311182684728062304562348679126196542196643036453484714300153517970841738004383757010934540997267101195975537671226645663669898801307107107658873229845536112716954886175996612419641107224820164658336497093165407170754512053027926762758239129435724941271298558530647386541697537359371134336466420064006105389037527935163361740353086053951931037074861412688700947715321886233071279738108471943406505597271160963145672878440742312461983183048029682943118824794868867584905257716043996754515189191122637497521073101959543002404616164449926322690435542156888992766529299149849801877904764531081375193928959175483953150041660903872021655769894413734100615172452248786171880425748391691336629281199997452049488601541635434344788456082177842017281325562106415218658675134676782406012328661390659281220535584498060132613057037344199144965210685383455930403805218397457503662040594568558329976004391678635216966486089932982256567714872143273718205314913906673740945995336040050565665396220634524688586428098921716040551519366721938033317248929537313812840695472973823813152498072903091608256197976532034940360642077179381778189216094989547697211423425853310118122770820242162615666903098280759696229089745007734016875205220210306743101019076252920703438821343209596484172951918951221916151646996093641857017152093093858722868547862001685081320569195234918098709196503013975190977391052931823941773601360457079870436293783787199048286535616475687241720509530545982343496755448094465703986134463644152973991599480997512226249739843119962547639124507537113009343518305399600999155904927049317283324718705553544883965650099698232449150126523241251844287428999829790410683614209201239926228649403301038066022566896615447861567842226723829759157281422790820847634298691675802777247795068242380980024886215775962828819445109461537211205467150811437065064750767419344505432530853814663652994096486115690122813708410712245777542255588835984126083089211017337953659409948196250545274843386286307809287606658495073196064116974485494492123997097536571380883446941797918176616616124457203869091693863520399380482958267380858584923309788475268245053280620605000199780465676069555458567909906399695406011020905616122646292541864101205725838652442892449183789833607394036537574426775961867900008407047679528751517260260763417795133691573742310257603
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 33 of the certificate chain of a 2,984-digit prime (185 intermediate primes).

Certified number2,984-digit prime
Certificatedownload
Certificate chainshow step 33 of 185

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008674994921 --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":1100000008674994921},"decimal":true,"detail":2}}'