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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 #1100000008766976419 2,105 digits created 2026-04-21

Value

15700171365243724088959791516776067285074794006518912286249191495351325503149969585389067525797938124433338995281003706526153720602526929548676860026058074537174654233326134306013629141499750614661009587459693713624259541626588973317866790803815400207485452365398482649883493059268274252878456987651147676905799282643039942018185249115755458843227718975289915137308279276583702433203283608225198132813841342525359706361403866515027560751801621226626471999086455464937577321179662178842037175705952821421084531521176799672199697670820885746696209152863582328585059804737825795657187474532921173204822517221545408087531721783568668092743124141589570688949953059109825771465827199519481382050436084714920988227012822802317721903750456848315581676318580677585786731946219784605873963716502202428538522682020491978026760860802130769638094483967577266741152105894922348564913294244586404945680031909938706395963027520098996712231010015630644112332018084447468657063436204448407971216310762377617392025234644505225710694259934308728525730184007478169788728561111385942081766645717572748159439687561634772055891492531966407921863177565559097705982430609710622405511029255717138938420932235928654985318302341943355208555554203247673734881456972078571256745005928429559447935333895686759078802088720806171402267670194378195877733976555157618874361569826608105533795600029014325730527534990267876796767702395440322078751375602788016335562982188491686170318060158575198408338342202067600793873910021148822287426050468031215092889966315362510381606520050077326931828317609145483797880714116226338456463421700488841793235110251319464844059503995830609525565953979753143592982031755885715467335509155571750597333315268504015717310081589128057028833517521306118602180598758341580986696866059719330364365550080508657755079733460936113992796080281306889502208594004648967603670030803423689401602602988905980912792641430408914613921234756074155901330157757245775778336234518168446038887686553747949178741247013246379142725502496162520367341343749142406438403282217869719654580414782758438414467329971567018159063402933486659
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 71 of the certificate chain of a 3,113-digit prime (190 intermediate primes).

Certified number3,113-digit prime
Certificatedownload
Certificate chainshow step 71 of 190

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008766976419 --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":1100000008766976419},"decimal":true,"detail":2}}'