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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 #1100000009075739998 1,886 digits created 2026-08-11

Value

28375455028521584059197833001318082272924208924617504545862446513031672184982814717351700354712278316711731019798363589029932513602838965322530125670059654849288733214741637117692628062967778546113844242239000105356301322287294504010062978880541165871917109148242615918620519774177457147232891798278438326281374237578918362250827815912815285690268188804384832821264157659606281629960460576162269365642081730821096294635323248655459717139797053319249171157858163284331366203128662724732683614160852257945346633076524696158368149676881925851214868130241289410642952013507041043602735748859233045481892199235103112759288711430726496445874781982486752887354216400750737777295601111612723570627108221688192810689070901291261876567760012336556397100247135703829298877198994610493082429716499241022368853581267818784078392391177314353864108597269019029032428164937163164164884479701613747015693217900110241693373194396833400836574742491649490087752548007926367042605071991874595444469081488319017059718300904243497847310599799630974432001705028051589208506036983899992796236850467756230613833150180200960540812564073536147381438173407364682156134928861451604373889498637525469289541849053138414235602793798740375538340612272918677275430366480533145217805321669873519704523718645331226673160957426603544390987020189021545721992425311646865366738386478891689240213749371487436318812600289303432614955126323889317572982609518827834584137093779120284585898996076475269335165715338328815496176653639446498240259192611385839561379722224351591745460664128356722580273170341508537882806915509846955506894883440346550219637036273874641451945134066224852731211923042622860619014068567935383313249899810536571189645847761227310081035316150309921779552299015177912031127144402587528317316974721329080711716877053488601685057251489991021278986313866607562001392375225545049202987865962291565012069665751839
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 21 of the certificate chain of a 2,131-digit prime (159 intermediate primes).

Certified number2,131-digit prime
Certificatedownload
Certificate chainshow step 21 of 159

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009075739998 --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":1100000009075739998},"decimal":true,"detail":2}}'