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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 #1100000009050513516 1,208 digits created 2026-08-06

Value

28114065088388609653291844178065235534757918550298149743417325228750009341695279489489426403258720234709412480996528854712107157504922803142189636472710643865638189914586085778009330450529967979332451329059911544422882852555700031757069225224286655683415129312899521309887514014651202577940184944370878134122646032572380439113241139915383614042822282806173346599461434555027245502013404844801247876020479744664477449461851543166669352045840696338411411797405375812756617773346674109633615410349374631364708102575845969459074502522413880540980023207960740065089893543516084381061813737643251915794213663209740256112133862843876720179770011035129585977438881660949982433585139639265772360331959410603816315403259798016470550934504022011891520270165355684975322679435022544653035825422922264877155852314515445791888512318356785888348157166767460998217823432398929068252363658501766434809877946529992074486014741279199378437087816996718590885182112675235840153854544246923545394948411534097072784905970864215833533004110201707554458067853740883660295937294651595644339884798082147973886556625807294948883475192081145472169564079986548116503349797527428714305366570507812928348686599699944469507473290630909275717
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 26 of the certificate chain of a 1,530-digit prime (124 intermediate primes).

Certified number1,530-digit prime
Certificatedownload
Certificate chainshow step 26 of 124

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009050513516 --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":1100000009050513516},"decimal":true,"detail":2}}'