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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 #1100000009080742421 966 digits created 2026-08-13

Value

158624246884465584461875566726888759458661631686520452863958863383951250436211844514389906250885979547329972923269159915952491642561403952575300411139682312451553887809514874486246763443414490473071054092308321400043999542643593518649463710764556998509772234693436347112420825535259140641254307551736611515219222808636942081851909776744656371762244414693910770075356727558288946612896385811252047547012171857937184786145280703410760145032782939374821529343389307277590681835019731263279641768077523694495275224178979960017507879769682532848232517880433157871263171833679184526306857590513695049618655155068875334437492169797597708840458964114207197522996907353580921694764375981986993885314280969620663192885834851174829184814773988619741323275892740503310807573522258489668278497769255890905777931639000666924405958982765776901013005129443930896470627296843181997311899349163687827614021350732867710757951395242257227346812598003845116657282933470420218451966202123
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 80 of the certificate chain of a 1,928-digit prime (154 intermediate primes).

Certified number1,928-digit prime
Certificatedownload
Certificate chainshow step 80 of 154

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009080742421 --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":1100000009080742421},"decimal":true,"detail":2}}'