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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 #1100000009057951505 1,098 digits created 2026-08-08

Value

176521084195238891802903893332629623348391910128542042623137191765827323099382108262186936211074034564462167369625464647833275823175589840466431758217291732884328188617872249585994833908566137550478602392800026867128028168360655204523159553602043849979742585905491606584322504013744258784661748213430796991255164473364335137950089643563016156355601799047110156651084267055482036138025264511597696416246434372302236815078310002570170059867185118176103283709990761700248169144416379818882546903205871795103482047029526781973657434120851649821396839530736119981551213089615019289026631229231277564637782209826359332155157337521803024671695883112895082410819449520797650639581444531833472739477076854813207025571892001977597648330816176489705352024306857381260400039932034554631396392809795343235373559462025845785577126482237816253212716089139963051870611847911209909390855493981854736496774787982096568887597330447534537309480613872676246654838534665533878778622298568943031997713650891504857237235850462210247003469110060694978830384659811171102801938967998258810884337473594868335049738652840858151
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 96 of the certificate chain of a 2,254-digit prime (178 intermediate primes).

Certified number2,254-digit prime
Certificatedownload
Certificate chainshow step 96 of 178

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009057951505 --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":1100000009057951505},"decimal":true,"detail":2}}'