factordbrpc · fdb
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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 #1100000009127305952 893 digits created 2026-09-01

Value

25427957925256796473428269745537635891574906438605472383557935065086701442083712415014007989327926005934599937815833705092818694649460130483048210651820191005682888885020780413463298356749873733182498990915532247154089454461986298256999509420185292744236439889620555346931616955725771728064212357663583234140782805860848797670673156793523320164567085476543233223839698891919491016683727046919072556839683748377187332829598716354422740938729555489277401257645238482450274082300229998166061930574449534451335538788896989352416882874490837948429014535006526389245044206423237577576665305624513642540500667134365391354936215578361589890391858306530227073825093380008450275459725777659816168539990531515703412472145927506656200102740715750804591879170630826235927047259509206508974876915250073624036112563090562292353517096345551237243313313254312685873311209740712008066841416699407776584630252937
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 223 of the certificate chain of a 3,105-digit prime (328 intermediate primes).

Certified number3,105-digit prime
Certificatedownload
Certificate chainshow step 223 of 328

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009127305952 --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":1100000009127305952},"decimal":true,"detail":2}}'