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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 #1100000009061477662 1,247 digits created 2026-08-09

Value

19559525182333376781805638865167075104460055902518494037445315054413494189792517421422044952221468952043549234238264719684043312815757996571124879435783640842413450830454036478779845323819727608215230506426942647002282533300960521320975326312270906696893829895912510735572038610258278231237517716559134268079667823152114030788297733871494607069241415093466940571270166675820122865224497004455915689860589426791291918890367860675834265290010763510288180030548654810475166126649942270811157042830362696941298358088400388333566484513996924356544830858393675491072489637765878293595306077692379081683963286134576280834882836867285432596632370229124418157944009113363530593973329262830789990204003315360107126375839060639889798368339979581519489833948372933608817969626711317665029532025879951420244346081657083137242959344239717556298832536542930869662521443890197171060410470172801841693453105421466572834971187646184532835869287745576870448405952963921168929586184459391009183872252579550991184496150764310989189147081053717705471549570922869397404919967624683991986300560956890425297034112110033871196155555882105476668180388763236038295398869175233289538319796351844834002453108544748663539694678173277593495692247951392085991086471968329577241501
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 40 of the certificate chain of a 1,686-digit prime (136 intermediate primes).

Certified number1,686-digit prime
Certificatedownload
Certificate chainshow step 40 of 136

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009061477662 --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":1100000009061477662},"decimal":true,"detail":2}}'