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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 #1100000009080307215 1,154 digits created 2026-08-13

Value

25497203431385750381688899595632936764330981337567530988557540646861205617020127895920975320707035428229829477536579966960674243546384186084184480567373980118164201211186763103157806459315975644418522758822353048543039142384510138323577362401171319067778161125992232482342083624176422013743310608058141232953256624120117642075583654769248079910382293894401172241837070594854065621581108279086860177754040792674510152631353750163333811410109268597027820693889025737428998706564889051193653226883455162119826575342887151902528470425023927182982415722987440684658073950461948321393329874576387523278051754115905963136156536934161117326512272570775216597061682686218452886389482165985142078422458152033581812774067459248284338619825507837793635152459560400374601374879956914560987761138788069329168287410567071830235039977391442170558081135821683832936882660733063361160271234635093259510194578183751671258062532079866772461947695766630858419838914853383696000955773525042367335113755128587146658617306450768607798896506146434135893092195202502891652247854642003510847789315132571799725280703446727651333942675166600570895543122963889942251414599394609788827
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 78 of the certificate chain of a 2,059-digit prime (165 intermediate primes).

Certified number2,059-digit prime
Certificatedownload
Certificate chainshow step 78 of 165

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009080307215 --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":1100000009080307215},"decimal":true,"detail":2}}'