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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 #1100000009050891817 1,452 digits created 2026-08-06

Value

175491428824738625472191535762953005124487893226886105601848842365000491918624976238957624556257866859123178557061897161424760953732723863570302315805295108575672501774374078009995964518393285077145393984150155314463169984026832670091979776369419314149849563630251546415021785742449697199578985181227678342082409131030017731396383813729460146792049236211914008266706638769407481157526529451817841277111284631635204474363186871197960185332178276311014176709643303420556710195189583098705283246525845234801413358671641268883690823819360489511571504440909548604462139033890633505866490168646800380490714376941312074128084156471517665000215646149751258114500767050144033855375209242784858114788454389361446583872923907948813360427257532311279277119036288515585740204497661732746125040804886223278963892238845618236436338613337359814547936066515778492612611316812830043681739666020186128325349668726063877621862347297299963819451581162355208127631697861694558970433421227772250838530691839183078941805950780722503399438823449105422733667942166632520434408298883043726627260453690633802170738685277062589909446470740164700121380929971191445113283223892498412939489594198270443696975249316379418424997594401152107747955897205881546690408833575302049423447862140342870706611991512352897410182551900147751714696467074915347671911349850125432761839204511404417549020451572432647495374144418663740865595991804561555487280152392179948331284320320228881365585217803
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 9 of the certificate chain of a 1,546-digit prime (125 intermediate primes).

Certified number1,546-digit prime
Certificatedownload
Certificate chainshow step 9 of 125

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009050891817 --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":1100000009050891817},"decimal":true,"detail":2}}'