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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 #1100000009079855052 1,697 digits created 2026-08-12

Value

28884893191714122925807670633155732173748865837975957028308590350345149310445617230481684263747880066577667498691723302418730955857383140443531245212398301019670621060585484534180469773258828104421220486512387861192558965663757784298596266364379284369263442124138742846842837598860688455417717522460965918699765900761847295473762322485257885880277180020006236012328377899609162756084745341592044083853310766621512837107152708745837560902175701188445368398182683174054256450924976975889390721413531642724506741288746948973709289384380220863794570430746718850549919131520007211002762667829480374460320498162987364586976566005308936902137985358094053883180495351379392066868403628178166892251073974316886476900906911789187387040011369995103436528824230333528563447131485758012387949987159041682831582975616131000200958772273598754588147461381042175116706007897237472896650661884193670441486372049339059718751979902279750841839488132709205830473146240855809337121795377653772543784027998204930771143877033210812638977568097351287398518818263199993042361407087788596839922271009389334486845796910720603675526631714491845698735303171297143929948863179875330973207405033088264444877833734802677144300769867648103494386019325522123905423522790408821895057354509707733506521865911371675539335750985235871524956856296693115844870924964366668149991876560884711660295611328788572950824783728062751856060644482717488977223804353628997120608835658527725162879042465436160145537315877539837676468016033807975026961592290898859258230707697374126234212309878130902591904928518613126178874070117154384348584692644124487076861297273057493147937642963354819879503738309725067343099492603770432193741408236324674110381
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 15 of the certificate chain of a 1,857-digit prime (150 intermediate primes).

Certified number1,857-digit prime
Certificatedownload
Certificate chainshow step 15 of 150

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009079855052 --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":1100000009079855052},"decimal":true,"detail":2}}'