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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 #1100000009077203079 1,821 digits created 2026-08-11

Value

388713823191328586060639865175700341082285126503784470592530143220356480023962577034735545759427243410402125234205219771260273980610311223894043168903694863525338442893456625267768180947188703764543711941660231064419738910599285098726537081675671437119946558895504032305929693825694660946028825351910775862896702728980691932567684881781681062045082703052738613428915407505417875737350430854703100323079827066482190896078493118712886730233780083110687228996988798612096962476033226472562201944121826010721013397156899485404402578711197259974901574556467198009208477084395621367734784107305804410712006197593807538882394218044756450382019410347370226280412621990950201610016849236347239902670821865884627749866946043914100465214732087959632422173750212011780444129542859918712537262130151574279710185905598888667308210790875462127955575816891092002281995323403398550944728422088292201848216145760492237637178967505185683972500076674031560527002884416025516180742319367423363984753776914962757119503827110571352968715496448613123980000601004217308385733712775331547193788702267475434541905620279881743046205753336756277911067728512942600832368379909420602031011086307741146860605853919404511544126045750611301052669413348745269126110015618987597384002666901090745184084954813995628959543256156003161358519310732820442098833541623824561315219185755978623089924512984693667074233740135092077329429007538447059204513159313133158618050697457758688545558161485309005107335036435680753536760329625960770593878949658743394285171845208118593594152936152716213835571915543316415916968850563457699648566721918646662338212070694971461314285654756200971581372854071562174666393236407479872357729178061304789295508841120662575088643847680163774637509483109504846903319757089837083089487781676652305721441486513214038274380453576158917159
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 2 of the certificate chain of a 1,828-digit prime (145 intermediate primes).

Certified number1,828-digit prime
Certificatedownload
Certificate chainshow step 2 of 145

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009077203079 --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":1100000009077203079},"decimal":true,"detail":2}}'