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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 #1100000009066268009 1,091 digits created 2026-08-10

Value

71478016611478939429534394107639220591047375335061264198074185991387210100111234585858392235221774023994705053434373437221707239098095191144551311269349490123847610532960046536450654292170874873622832512845753619451328446448400133126642867797874282024603915773762107934398753278541305415640347194828237861026835778345081895588915353631232571803863055967990079091938532213907940634430874376038918423180997549642789440753116418472363121630441074595346091644705942271021131833357615622208523949553816874368562383753690849007834170073381442354553221810846260752622455604715579083551127686090808336574446151715161859346743368608238781791375944855789081047569810084672200583039503079800593461159200033273228842316307413804223278666122490311699492468578352844185821884508275986773158076327341125779464039549824985019593870349002944191635348642722152201972948485235481781943772272717275144634559881041778888708391102302737428346982910551537164158930834015900112869901647637164707799003850840369502301930215574088569070156762070366011341650578160162655061676734360092630724682926113084334224749875807
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 56 of the certificate chain of a 1,722-digit prime (141 intermediate primes).

Certified number1,722-digit prime
Certificatedownload
Certificate chainshow step 56 of 141

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009066268009 --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":1100000009066268009},"decimal":true,"detail":2}}'