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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 #1100000009058378665 1,842 digits created 2026-08-09

Value

129472700847694814779938932458439133816341901060628792803935650146345767393219987240054110002637990238907378045050084646814590284240296979598749397502761660536291637389231685210135480393162145308002720821081792472271787194948999177936126823462263139675427825152212305935214285803733576318619839220240054496838773554616261229149858150522631293678248701567187094750437811306164649576584335517945509920467767738621322779173674984833073963592146343248337381137789294573608107179462298644387431819037629731159269353904098341710283593013007740878172270369023626374763533074982935323026791186521500890580102653823671639014342990358836628990327084283957972871283630325373209337686042013714151260356979299360230428793239813685937021376121798020371483897321218451348176750642841857519213720768738226877715399271324937704664609718274077657112112436400672817665776634328317564098427553970774761381528162052099269985571471074105950234967443522633010575021462987209247014493749967204931988398918241270945902581167977333446511812279465912316701089780271409665952119731801150194565856968746755418185887362122265658777347406583144460563136720530348325795825354324307320111307250603281678507115006798780751127659469249793685209373646827694528778835460422222944251707830891071579989411511689068967541028265799056612341967805720319359255446259210989112642340601526560954658095691795223395115654819366208027287554670472190876680946351387749855189704578036061989935119068545902867137231835836611480987139422758402801380870143967682892254578727584781208379671622852902859364219839139455193082724237678072458297872696445310320200060739631519679290111972465638797663924014495319097252404587570680075813822146179426277512292850389643230374101556341324375301115500440037132100721770912475581738221570130524442547452095960993595755936751348456772425534590615667817741593
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 55 of the certificate chain of a 2,549-digit prime (189 intermediate primes).

Certified number2,549-digit prime
Certificatedownload
Certificate chainshow step 55 of 189

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009058378665 --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":1100000009058378665},"decimal":true,"detail":2}}'