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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 #1100000009059191971 1,796 digits created 2026-08-09

Value

12617379445530671361658859168969908177355190944911898279700511969480881837657346281080216167455394982552102858568251753564663184524566867908281115844822249331917115691727913111658316261618134288766193465266413397514669206934020417687658603597072437742308720624178820738977900729665379490494676695096757897758935479396295546108709255065575127952822155408655242554827452283586469854531549849066041550489335753414150714918638427675456607521932868287886377836597230159856600543997203178206067391930308123280004200309986403796941684351055281313352778690757628348882551019757370043030459611700503458302256128919012630217673094477983083056670132420718905312677672534201391736636316093212861017251596224498532516017015741178283448804051426427616131006020259939505584852960767528499726371716294111493489292742106454358272097200282905786100613551855709219980383830416504568822739194888925534411528478631642458993233152519657935808039383944993171696950395176568889070097424670046910379098887065496344788826058908065814422698154894649188030373145447146715117913053808015564584474199711827096137962329478687324681699090649568450796398211161198325086915971219116220919356420869961956354282336950557479235966000237265601248763018122904308108046528072057119021901922572099287424867496117762139948477559461974856702475828223198892968413035682169298723108620672829159087562642731689001487727127605948550981857061314589272681310467256742614417027070180267298397371621346577701266987883061001835470258710980026624352874490815798970146219410822298185462630513573469439761652891766891907059255829634995854521424944002494400925937637816612341904520070071283168166258505686953786215614961872966574953231278492845467746787885405625668495465111207330886424785602174369664393033367889377169326633889314470324848145677390839
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 63 of the certificate chain of a 2,609-digit prime (185 intermediate primes).

Certified number2,609-digit prime
Certificatedownload
Certificate chainshow step 63 of 185

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009059191971 --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":1100000009059191971},"decimal":true,"detail":2}}'