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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 #1100000009055088787 2,494 digits created 2026-08-08

Value

9577921049416314202863546375344817158503999451402082193146452659986277410145881721760753291601253890167537928460489101039960687404803335626621482731951073425587974789929259635211865615107239207229812791484126323441098466166720950646927093309395406234282124338167518494774170494905913637461385821245502191433863918765770718430875061469148952629297297499821066241582238173709851942158156790104886255581678551762430722382186931806296360752500634953270290569817084613267613242972727442884169229802980695352290414455489189241313736383109969891852350217728345540449326682238931502478148661151441719216833067783397126681838094114723617234878852772444800166374944638876299026372479744762937998377033561780215833592662171564094476988458660787338511715768939416720017386511531398134208354145282182845396650801930617188575077664607425901194453941746157965444450181912377817859024706800453709738450811278878559187358929870459739388942083411860911572322657276884897816669800814424251115463329898409853278722223059688440871694098272048266281843154741622895750413092134278378800049160092749159133092641425445432566551464179420855117026756487747822810487609153771065452523497266459090970894531410525013680064669607156589573265395430551391423146215588874979958503070993464335421332108944018120500319559054741213489414181878775952234543299003717997817332918528339432171143394171976897025759326936162339116608429215401587182310565118129180272977229279559038459753900709071752047932448968459664288790580854297763791734150927151506894570907691375182276596448001612587468612063909733318512143508660487227296870415392601114674329607542237487010316717754127598227468537512020073945769452752265137046732744695617801743180737240175874420544172861632757598827827142448930762407468947687311690887324502236281191877659539576105462665589662411978214694851538762444001548124765240000474773647435285744313010906491366362855139862538469527838104665160022555146394772612459917107041778862167948316104916450281008823837543845026447389427904986183424267375808691497129907911620583846470535598572711685965029956874532130729845063206860374429275123692547225175376265407422888323081081826628006350540454354468837021717940419785239498516863168460408452600296155311823187489506795841311575594244256367419703942953176117565223009798721389246998067832735348745225881802962560153465494268073008738346363350008962352265181408188262944675120584543498436683026607674691180724942432664078511320513381289875904252901416745877584662584819244423
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 4 of the certificate chain of a 2,523-digit prime (197 intermediate primes).

Certified number2,523-digit prime
Certificatedownload
Certificate chainshow step 4 of 197

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009055088787 --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":1100000009055088787},"decimal":true,"detail":2}}'