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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 #1100000009127082402 2,379 digits created 2026-09-01

Value

985128404364258997162109042938919993551986900190481402032373953026916311244108269715979930153747589012732794027814582837548388114969129093860278552661316182636350291950482459825683046221158817581244001876611915791883301778205642045499273550544061005074476652520996642373935438426529821769085460605361210638433355537247707098872850212146784386063082205370660006617278310401211516777365482716595953901961669759563884846859649532555035116123573361712313109260803110306980796649974184221474174848796439673229428940883933013536923738422219552243578084544314662643538650995072534853729359617698772614450556887062881752486839689363234199050006900257914341464552189261717061562472568960677519966123574239493279107917268143770265816943369633246474722165201546547447170663636333219534688260876330013060934961434826439505117761422526348883086457412051396001790156113602497407147199996868938223246544121682830366157999254906017281049498671247000682728201684648249332471632852900592088751923615617717971341585065457656208823317981311211465361552127991909338820384359528631202699422759826097479971034995822006788943452588862023831841920718642669313157789464090986813243974348498897839225550913177338546393600084758916232934787451374337519513332012854003542906116153312178159960213910120583386399370777056465348308463291203019933305755213834798215977937989841439115504032298649562410137218111763492350581320670564498181684896454951869068811170805478919647630070094632218279820443047338900082262933964625414835572593009239465586456397248688124315216095954271500358216881886454517444028642375183541255063586736061810924141831477596778191797776727555315422049400738322505733828755441832057701433360622605478940999629554722393582147241707470042023148090743256768984605954170152779455644542015261973909062577805684350633302084001743690895868233413842686395267254501428846283715942220271881244108747747331774113594378907636524247783365884811482504081493062859260827417502147736233251572873733533949990419440890339211965328296789589960759880318886795332900005754598969232136287120626088384596984672090906438470337992955800294796304294454367598197289152856351471126693225158052000252826221593344346605951446944377490886864883278597080955146881533393665556322598698825547080508842215695221419203019749585970314724091108244856871314747675839271853819366151829772321526033539459666717216284229703689370019
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 70 of the certificate chain of a 3,127-digit prime (318 intermediate primes).

Certified number3,127-digit prime
Certificatedownload
Certificate chainshow step 70 of 318

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009127082402 --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":1100000009127082402},"decimal":true,"detail":2}}'