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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 #1100000008680838604 2,454 digits created 2026-03-12

Value

225995558533640230298632463302351962844401799404243247798178270934712817766248629411867201588817856716479007047064261753030632723242348718910246288488994769068633919066167834556028148835120206768734797932153233919681111296027310646315630617395738957966158804623736014292639239161504364627223881587533355696011727500806152030220323299978046403484934135995018476974554880565893347372258038894148210922093404818118364210881340355252425360832564317206619658516032735674970317183830671806864233516950633712815959637217060691633895524159501934559379719538348302445741392986135565119851396856668927026921727211093570853776393442920508220460542967816556248192943110823367306076686195121140463139981484108777353352478556123895682916647426128444828910427424616067114254938696478953419476697743647451911547608217060619624837723484418213696767243647057593648043118676939298501440361048013932692150863976578573333162267849506907918886151696325732470006367413419982455177416152929739996649159395239313147828950837135180456553080223165282865723257478479305989217396647819498808389406553008772463508482076309399525671393951184405525367022537468449548998444842136877491339726950941167794974362871325813467038229762740107641139681143914090049570811859391760491635495147154336067188757364711006163977883190951632794947010524028814205801245779468872263448573039342609605431235904621193028297945025479765115990888472564944682629189741991308031440783531220216267572837608981087825624804732013678227488916724973429496838019728589533544789500398061913362782692425152861389743938311979848378928029679266459312185204158651386748572481068470921836147346250539561077671197279138601042347773616926299998774257133775706097393040127523588040822246101419630325043108851262454458429921287004807792788763845780526236980548977622239807975044206194321857134328492362585643577489911131767291445194383556790455886996377572515142968107061178052770041609532953173254885973454521733406764123377344460246494626667527312002772076141788698582847660344957974139815507949092344046341399744092452222388796050628495858654244772891236122016553716510607992579428675322866966397277306500795448631627576698746706106426956384373504713539698293062534134654686458783499934901258714837675014378513078373982585697846012174140311726230542766544491902441919572352604099019396977780294457502364287588831008473923754416757712108555710462400481312049356122556035325861367586630408737054875612614417869116027362123071
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 10 of the certificate chain of a 2,589-digit prime (161 intermediate primes).

Certified number2,589-digit prime
Certificatedownload
Certificate chainshow step 10 of 161

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008680838604 --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":1100000008680838604},"decimal":true,"detail":2}}'