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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 #1100000009050513506 1,225 digits created 2026-08-06

Value

1950789498726229178276066151811207746631835309898034456051621201230632183082026927004935179478195126603736190855606494656266563565287382993367106394297979635503214768248025690664378991667458888309656832266178719041163070874154832782599195247454344473141351237540298164944798324412010215859630067886643376674720386770464878254845542090800228297587294535831279290656084073681197247503100005186517250528290664103792922715697905613034948399714447026529448634144757073317257377953066960811845571839960432593866395174403837160623872440701639918995575829075069780534130616538342383396090615653053657275138644567513748256847169224175275046086169220568576943794453453195764996421894319436198642179651498929597538351045489779005019028274369131930720774892364885542167837544650760827903378400482830248128939875415210611836176333552422200455361122312782889702751771960685940962749276215312604903195438448046291725340066521131630844167353114091754518232293935406688273273145028258214145440435564210928087961896447974013347136796806377274924447091090689534713327435508932230837786337161065624681589292526174830740738318017367915440236537511546457636258624828356334205217738010964720606576566842934858825920483849966216465159984867462659889
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 25 of the certificate chain of a 1,530-digit prime (124 intermediate primes).

Certified number1,530-digit prime
Certificatedownload
Certificate chainshow step 25 of 124

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009050513506 --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":1100000009050513506},"decimal":true,"detail":2}}'