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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 #1100000009042190572 1,095 digits created 2026-08-03

Value

869198007544035973520443771821801390631388941599490845971573874373984665526296720401582228833256485283531717978375691597543348628743677957809207846549162619881786538017359610353068446994201408900061101762560222800841604920584280745942596819101121354817463910808616394173384814215991501635471155571058066504891693329757145491471667856316714395072961606678973594238222272198181293442899273201132131382468516012617400202746708530258281597687638088211038586246818605011387879099473694720348092793899135916838838705295589727037496930126035043252146126396738920079727339661631042260954886310018388227355965651653261136701005921874534255240500975296845897824771575317838626685391885120350821850228897000034243498012703093892248113272919520658516034490351507785620329532574955050242834075936366972462944701190371121665951851837148703693574694332705364609636267165923556039735538303411936398240395294232523316911993377682453230415409666626360311553776498171891776544221213256600186438836376015332738288094483000318305749091065398521291483463509042158910329143293872271798516789231789910724235470188136951
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 20 of the certificate chain of a 1,311-digit prime (110 intermediate primes).

Certified number1,311-digit prime
Certificatedownload
Certificate chainshow step 20 of 110

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009042190572 --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":1100000009042190572},"decimal":true,"detail":2}}'