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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 #1100000008727412187 2,182 digits created 2026-04-05

Value

3281096770083478647493531520761504393744128896017922645017629773772375607870739000719566470722247837671691652257195720570442728943793300298540165959674494189311609922851158232401515027684384890429385085779047183408231556172608053963236187206155067420378147803338787117009356867806159769089188272744842377596952421673877024213090162353229197420433223264506851294311107479475219869847834839203320578105778286198743494195604228306275085541293705343822898904748294145390163591144557211860594252720019864251820273130125304560914873270328252620693977319654324263303560140959814381085264489443732873890462091958612783710108110935280908941532783725465971815163124946860247305756093275619964614215994320664971148392321557052768377947990310339380389623116611768053411338767854731753980723334653662491467420586317395701550841227074964396374002391895441307890245066222561591306968420748216467605869959258511936532464549935946999072038306698889625538144814493894293075299806899862175874366575266210413908686262134238236657667256779646591354966748718252115854619780505147692011751625217894284801844930284538581453027383080481403531155437004225043524582167771085941324535872715327550723022781734237303710243209326715595936449302667907947661149457223702561049255462570596552006316661889912292932705845018352964244541299677057990737479227520623494799820514935839222982772717652608339359358942030899621125358565399458707666943985950705144491210855295257998301332045466316939752392378778916604088907996360416873560768927025512441485254769366158043078800899487057700570742995983509377216252384468685934390236515115734422081416721632220861135714593116059165754618499974309055506916962278593242467523195092672131373443285325264741862364757261328339633784367839280724926202981810842212110804806040433993878730043814500680875732094421610540678702722405200354991647544210237829753416886426901930054842014768637016425753897197929009871286832665973170113805761544943895321085707708476501145004428782189569552764512992447714851255578414796550686992931035637981189933547783150279998885585260386711168367091138931970522598605689015100263154989909339573942393652252503990404612024303218126895128859509885937620123
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 63 of the certificate chain of a 2,772-digit prime (298 intermediate primes).

Certified number2,772-digit prime
Certificatedownload
Certificate chainshow step 63 of 298

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008727412187 --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":1100000008727412187},"decimal":true,"detail":2}}'