factordbrpc · fdb
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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 #1100000009056643398 1,337 digits created 2026-08-08

Value

42101865488304064149551841761561364005919750340875489352805790675552575876774261943707011365132340103433828200421525302349581502762675020103939621423429127711950083681173999710908220677900370243892187899981670383519506967308808575167316379462261231620026663643078956710115813405778115150815998686932396572806820181648598334541942175233076812028932761812765701669465965070333549135364306699783358600870499324263290542773898553061637838704795503985287354798123143564932370476523328491002040402024827731185976687651329279329849227141369889137950714839719841330925175901132237590761597097555604691224899291298481886843603800158666177470013839612707524979447587929643036578303170832945179719931766488116359534074474559410541128209015832035713144529451078844126729976723849185257488977385295303554329556196232038319365161210377305788612400034708784830861827571595289019195725222688712880277010358342854141821333817490611489111222365129776991984447248032924128886829734674784210741979370063135423033433874545267879369062093365784076450364664676179283214030911032071265811657467183780735505520216206492791949763201110571441580924512677292062483430970162609520776510746974700653965680986178571829855599324444670435778062192633884355282061051756105768957581004596487999598137754537194374897900279012714473096723173548150042147432926458384492145851
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 99 of the certificate chain of a 2,536-digit prime (201 intermediate primes).

Certified number2,536-digit prime
Certificatedownload
Certificate chainshow step 99 of 201

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009056643398 --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":1100000009056643398},"decimal":true,"detail":2}}'