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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 #1100000009053654758 1,555 digits created 2026-08-07

Value

2531331291192705680027765272450870756769870640664621552724321189926173748886096925368691376272309069677668069744464797998571597969615417917711259003796885878089715979009143410340858093315993769624176519058682016753686884339120618703126000205193237605481296631143259792764917690570098244694419482337901475156625542250852569958001997682670167018765966640374902772430049429666010064969518511959195094674094187367721428540756357343175732331483997316878125074289790422073124766643160764096246224215043695115000640336604406478528356229537050665596307089050885888819320236195561283026465358086575136892419890899435839568194183655153525857556493592808012434447608907472204012794993688839532383690365937405696322638447436411092554623083923316782013521020447244735449325148326905011999546599707856829648651023687475506203202272619812947612135371562123329303828309161612055103985884394976981615435602736589214874428695713501927434983053423784715716256385661057640557573322969687885944100396247973609218839433456156392716745505431483473644153118645986972028667542501967690682077544648052325922471699872506218852575228615274003914199655733812152330011475843261969410074555727028031855132148916169878438813277573138546465798020174189054088543472187206857383879496925467818867123996986727510114290363721352322512813498172084026301165736131200357321193412018244122179307572972752242459293203459297931792257131104473161544085729947321679627545458190575742768218393300244280102032941217069196166280093948791454398178464297021546601422159036757578811403713494023958512178813
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 55 of the certificate chain of a 2,205-digit prime (169 intermediate primes).

Certified number2,205-digit prime
Certificatedownload
Certificate chainshow step 55 of 169

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009053654758 --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":1100000009053654758},"decimal":true,"detail":2}}'