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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 #1100000008677177828 1,111 digits created 2026-03-10

Value

1551122343988175884835969035990506198387853944795550150287721876163541139070723333634273213712825846400223451398746244292519553514788415541904756283489259731158179269784526882614800730063214713091805557255616705714872209974180482954458286809358572438943609093595046557122017602516226340785799490802432178092957441187080597670468576163639134850226271572306383637502629825801164551413834513701506864153511500032541419246909114915238361993634202580577226293877148418323392428964376188305687681096238728751927341571220034226099742883566921096557815014062654786344198806287480337680955154553021137836762938435963151268062336401934376535530163545924144473570135161490378308473763929869695256165787094963706180361676520487756570728525444231010598146322529941145567351313947970894328515797556573841579480113829582762266288742590917100758809362403123045781394693017571595710179728687883405939217451522914662247965291477548254273258891105453956389259225553187961770629364883001515462308311389987572309318520958662470890668351195312467052135045963867688867838452640727147229035621087060687986250873916098926059198610734663
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 56 of the certificate chain of a 1,642-digit prime (178 intermediate primes).

Certified number1,642-digit prime
Certificatedownload
Certificate chainshow step 56 of 178

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008677177828 --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":1100000008677177828},"decimal":true,"detail":2}}'