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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 #1100000009090412221 1,104 digits created 2026-08-17

Value

182413579762241651031181323457467871785439624801826751837973773286730312054841024688258856790925248925843048419754167503792354130290165934238565397679095314233483870550203472613969699260238591082801457441739372907483473801729222048243506939203326060670458469034982284641577780274737744849361212388474873481790246838630220249180056272936313539572393008176080258612540526056584169747201440314717760693162525345727472797385216008666809657186294579277426150106224015766581545988922038385405820425277620542712677350225448117626251247869393562026585498892959814875798479908076819858831404886114281973407566184133138289134107734763953592792096043949178224407987343345467719656569073791312929820560854529188134563117718158311128981691976477504671074366066578541451465442621573431892596723366675204447915174639809536677966511775901557423721129724337615149432950494396404975923498088640357361219779666240343997633362143382142821418619806914768716402831058651030598924299000685903698722096322295712082728291302757422204173043030964910297330575128292210395603249885984468192517706493604886260371969990945816674476561
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 74 of the certificate chain of a 2,069-digit prime (154 intermediate primes).

Certified number2,069-digit prime
Certificatedownload
Certificate chainshow step 74 of 154

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009090412221 --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":1100000009090412221},"decimal":true,"detail":2}}'