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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 #1100000009122750943 1,729 digits created 2026-08-30

Value

8601702908956419894812124235157704663141067653316378701735609367692580012490813240754956792603766693179813207683154806021855420702365892787540925683431303565367719164980206039912456740220346375460281820057299030230577592498702534101020670254801953146462620392560218767832967702008945382301992565783153932480137329529704110484650200491687028331467011114021230214539571028669624756538940050331496290157705250413263094682792286709358606715594373486880552558168998700855467514053771403706712692931394224217872781583028920613180605787384012318353681440300849157831236617040809484309592642254607182039388178993303399546651155579858483840347925530071202131409703555575277102032194931985077586153712431774957246322153814288192145644156031343311251728932967819545309091818949422006117894352411637275959063575475040940729581263349359771800808875774536036011982178876970639538113023914095571840205830626708674954779199440127799460241781227965009882568634055409120174862799102921808039382350669719690799212567477895270766330093479266389030221216271859274017803200180162972072451552094411629654026688521142192620218452879450290292756951471532911652970328009672768247534505270350330968806503781616728010125096681094801846030603714123922409835924732328237001415977926632540259994007367741670417505540674212589064330806572935025469218463025240290956410700528536676761608136287890421959420414346664767909520703252207116792315130093279853937745923813229997085472686476822073635619946331842194376162795864471687999961942629584827279702209013346133946452773701390926969295481307361330909207054117775581308603411591301573944053656872053348997076255806152817418405896219234562914940295975056605288605044924467365211898631205867416527461836214466335839
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 50 of the certificate chain of a 2,256-digit prime (240 intermediate primes).

Certified number2,256-digit prime
Certificatedownload
Certificate chainshow step 50 of 240

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009122750943 --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":1100000009122750943},"decimal":true,"detail":2}}'