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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 #1100000009055629661 2,450 digits created 2026-08-08

Value

18409461971577035580247197178232857535246170914940170921615769045649493385918608655588186949309708529878099594762163144287104970262618666886749408326418910258714446028335770828294799325610381606447056071834903189411482706589589856278164803890582904885436886571847632327003426127445967123822827143519153291530802473577229511393453526747267294029833743274513476820077077220871259323713688689442558765007912392337342116536756795782286829385744176646357917426456878910877581195361425649955362376061328837433094604706049681719953018746417561547555628426603325348056441601550171227167163448990182553008509832323109370558531895330260826464636747449788998626349479834937782623263234866750800603925629468452846128105421694567429682573156455726906661532712159693943702353489201514593946588834881885095213712017752045434081627568529793836269080418244254357015185383292790159075352091943325177686379360371971462385911779095543191638085543795557306893011915402396152058331262470149414667472063418643191855501986533383980573977463586351108860782886941489328307560933971865059720139498480213410637635986290686371149164723667742854554818976584940096176548157661526061840559876529298326838925840030591946731962630615071039506475421138881683671327507631897221144465792851924989416562371413607495727419637037245665748830113726436903135561701414400201466965764634367470703927636072319716819250263788660138752351830312354874248655360152013402099220929674353952142354667867536539144807883388976864572016344335794048180788038135581607823538479935507105616037616115253303980413031878447093330806431226934417382630823781792069388167550045290214848965610232816113001087136099858208828902604151080810761992534936773359396079634652961301316143670139830033195346864548542065436174075054384047795836956676772034175760178275845680188095827967869517242626499962022132371540964670065082235430081798925422680921542838121165318187675387400948625838720115989563110281820159395604875101273776886961459284612236216665769403403728090080476459990463127466100425720830876454419960726653365918380809123624788200330843139714894084005197237441913733302659058920769080462610701243123252295795381823051638903550258716281881763510287334704690512523929447732771664266472089525794630645942642501503071691641898567977005642100456285073250469069507277461382923993585808700194102431669878212377730863044267084241279596006348249967758094821173012994018572673544315847771880174428409066445984212256302691
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 13 of the certificate chain of a 2,592-digit prime (204 intermediate primes).

Certified number2,592-digit prime
Certificatedownload
Certificate chainshow step 13 of 204

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009055629661 --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":1100000009055629661},"decimal":true,"detail":2}}'