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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 #1100000009084210288 1,206 digits created 2026-08-14

Value

389941614545889020754798979678319299194464699328191705907185346179905371009634060284458328779442310791552587694415779216167349770390600986626764431490192645115103803168724588512086176940084279318865897086954318529750883888361444464640759347541538325421534284135392577349920623366469542708453206809833613811227732236098242203781711492293001851601993942429268389485736312995421461327865916467134790611515691093961770519846032908290163139229096812842295864496281644418407109642272206616654403953245954534854084417339371205925634251313724594766250549709767025409615676862143908243409866819298549424849387344633405261250249995317939310329185211160125520213461833422560738018348280355985693695546988180388546000052131323965444500937241436412979606791828637756429426625803217398137347893259524577769692115855573560550424128089590214908584147403745983363946178776872711769174892946623312367612886061781286449068951057098476365398260334019141715686535562420571538570553888109954176163852907903906748052038616866023885682000965704722414456205908779966238464537313191206030672584740050893519573750961025331932171905309854928304126120492826187799032492030549073875615361852538257920238168971905713603859701113599499359
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 64 of the certificate chain of a 1,950-digit prime (154 intermediate primes).

Certified number1,950-digit prime
Certificatedownload
Certificate chainshow step 64 of 154

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009084210288 --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":1100000009084210288},"decimal":true,"detail":2}}'