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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 #1100000009074404860 1,025 digits created 2026-08-11

Value

15903421385827387355579728662279757876790396462190378294852212066203849827944987450063198837513138167269548474334064832289917388353782900604661013207716131403534496634966275002139086008352242206094106658371515017282619470117717272050865466572632886312699411348579325533282303502812755493727805244245490114904657269311539461266691657297117174267061173120359319232982419789530030162641284488981576779900363723807093815687210583013449156344586946966887348706094218086450502860305897447327975341586254253179443685136602573254328608306284969191124054068780254746332419378034362848452987686761097634226549426385613983235121491636732024240676427031142397550257187501491852811648618137276929617121123551827501390576931730920641062475505960691756812261241838331463319239624554442074360191440312739227400079689205993679150745340170840553828356666931050763006000755948878191400633470449575886553110187817754005750376756704039285357571017863031470985532753844119167781493253119491295036960268930854621370254462557096973561819878536354667
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 88 of the certificate chain of a 2,125-digit prime (156 intermediate primes).

Certified number2,125-digit prime
Certificatedownload
Certificate chainshow step 88 of 156

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009074404860 --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":1100000009074404860},"decimal":true,"detail":2}}'