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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 #1100000008682860908 2,197 digits created 2026-03-13

Value

6599667947533730465044671372877487628397079434596491689932186031927479312288063791689133267068122445401835702623028855138997003962957049101894563546130138079363785566047244729834274192596802127318413397911567960576051907603783932935101654293928352148131358956193335270297428280235763606102164877995377476357678638993610241601675569548405946730062687118119242333166660896341276012102203839905070349745738474399747624224146686399248500549769369305910198581787311310143451802192804436470240378843305346638284486387789147067293453451839240231929277274678493531714438039950184852316801653883471490766027005421921144751577148556664233515227618846913302720273628991291086419959592972533823538221737223779518625526815217833629198133625334441280905223744837659308576477225869903271045130693313232927411146236692731702412198356506501259665734009030820563000557107752268210422061625622252614152698528805855570722517232429117754613831410538008138712919686348778535646301640562546604034035504835827457113152114208143333242741043197960672268707624837899356298651491460780073536953634003063901843247948937490220290908598706372144780281003422156695780135451207874588670677705975445266206460302628959645866661052150274446161896221948595482920364696207043191669352776953129902747150844898606055751952987891594710328524013014787232704803603596590809969214577027928399953315375209269752035591031037938501806063266681253926518278840713549351191638714454207560427664705472573108266994420240109557821628817302634960805659492376870961513211076715909312681635245747015036797600124891042385873207104545155453823442705884628006721930833591179237150884526576897077263772526246590193501620367493444706261631927714042525109647660192372928953366780727994748060003587918613954015529558162923048767483982604944934604491702790660825093674458795717952887356478442120015327856028358288696998187816966407688270360779260732334405965551011834715733951894174469883889801818408711784922146612445164728759416505379485655964086237131119974253285085326997102633002701219765607503892537159874078779428755175523243658474074575682260070112955480036113830083190206401937593539108711541709366951894637572265136278007126969030286848654029646910359
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 61 of the certificate chain of a 2,949-digit prime (230 intermediate primes).

Certified number2,949-digit prime
Certificatedownload
Certificate chainshow step 61 of 230

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008682860908 --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":1100000008682860908},"decimal":true,"detail":2}}'