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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 #1100000008727412428 1,880 digits created 2026-04-05

Value

18758239759573977755567096277147869008980503560171174745133767130624313017336326605023885792863493818169947236503690843689011419624984462285873569477064697336176688054127844944330559685875640883181554353698196159410058502536557937993146088739207442955070340821586012878592624288309701851295591369900366442460441568871928576666642456535281542909092232501325306247569919137545907978554120022946641050755922666030714623920384019426289454905990291471320833230763814316443605312697107630434538193420201995367025557344308034307392171255385710708564672331276762158834072750274384410188126621088605496690924694687660434752458548171125394693715530991244998745325394583717821507640703290975010175752818601296218755166284627986820969256368531892324170541813702876849005987588571495605072907819414029838213290281288716074883290180959698239651771936479812492356906463645762391078697083173314978535858016590572080007926677452976386557545350167750228754100298952975778030945494847621631872764158377278200048123747480516368640411700477651630199037801732082955083337363331449048952998629809793221268646804559640660359616343876209368568083046692381117852498252621550935030784153688170482721184364826331308284960528667698090109374458402223228840849658411615356845997192731986883385933523051187703727025093893165129524751016053974884725912443276180682027454474025570743562787252100477594005614670502884203990158392086171677367180371327926392983999953124791867723296760451370216144540811077272420920550060767393224371670227839225624446281192176670620488948186285364697760665565670944664674930128133515493931891992825460226515159463642529538855828530684653357416198009491023093744302360534481155051251757341332908488787320526813158343206722903131010937583046499094531589713112511618319139969547451136008771402449559226661430444443309397339879573298476892257506127720050558974737653095790559275988876039
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 94 of the certificate chain of a 2,772-digit prime (298 intermediate primes).

Certified number2,772-digit prime
Certificatedownload
Certificate chainshow step 94 of 298

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008727412428 --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":1100000008727412428},"decimal":true,"detail":2}}'