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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 #1100000009055131745 1,021 digits created 2026-08-08

Value

2887521234952705044266424901895910247507385840567239073878990992935148805434175509468478675913990874989528014419815771956286421568843488020182282627997733413114084997818488339794214473949806577779518927105124365681462287809387079955324009071364075231598290235523872607014618800896270051971704926913177063498342066304147161854359469842170646157743667967940233499937051294828935793847935636009157777021779573090293371497363104949506745520104831871258207267295180105493266804592767486368582219509640104846922008968485809369623325402920341866630050500673794228388170158401194509144703258138987369994931621561457214458420700687807578482889858215074718347347394142320264681648724897885487207330042326671352076761148774440026529327081644057278646728938064753479307814364198912655771429848719824224625923394190808401545493728811955319933239039548727884293656970899871800769034284276721741702739229665941207883965204492218043613123414726862635870509577656565876811417176810919439124370070423756966712057713538600497079025110855517
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 46 of the certificate chain of a 1,637-digit prime (122 intermediate primes).

Certified number1,637-digit prime
Certificatedownload
Certificate chainshow step 46 of 122

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009055131745 --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":1100000009055131745},"decimal":true,"detail":2}}'