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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 #1100000009054394369 1,109 digits created 2026-08-07

Value

28876312970417206577331147681686338932281080842274385703567080794192891145533800394556063577241624527005378385513245681989953132751563595779961900774422348530547415033111666133403083190936632990830176010489990088422688118261568735767250350728254130065184471643551977101257351046689422854325527109232869789095372627867518040027358044163579931688377102845597600253572668616498432915157656231095194094442978144709139129155303756061402449057767758688282690901350581198637734936066160849500953917206060265023111795610779606460646519497841626439041931851121695429365783598568181273804609800006270371445584208765170864760768879472755150578557591978351246360326680546595683236430436013699624018681660552667365855220972129991162629685723323323644406423244462427487971610207415865729500472411559236483808182038265796757814016024771089231925009663815994849671027526439042820851474632782572718141680326391272698543344917364549316648901095168015043805685965980575592032154806116445041560565813980881079654898141532150450004790046410499184470141592278925363846114177796512426082221257121195682740494396643203936686476656531
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 41 of the certificate chain of a 1,625-digit prime (130 intermediate primes).

Certified number1,625-digit prime
Certificatedownload
Certificate chainshow step 41 of 130

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009054394369 --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":1100000009054394369},"decimal":true,"detail":2}}'