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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 #1100000009056976873 2,194 digits created 2026-08-08

Value

2977218207458329936547518453894841228081369320860861572893416728535192873776247561473314596174682078734458244063118432029909405341908427371332246424755006126693816971342226220620578953619553110274225135406419493823371585011178865050145768343941555612542008937529798629141555048030167735163973333098751462471654337833252825203738043271824423163061350844868648831329493635994728102891136120732788016809053122048897079866635427538657252462182882883297291079123702902494415061601331872435227555371080894329634172996752178836182560657406398740787546443776518360537661382295827251227394743182436152307079784931858794794676899572917495527280242122373764251175274180253177339811834301502034668559453646107466575466910406484092136250572445069395560476633050157686695591483208829759837966799402187289341775946495592055611312530272844547131718390584257766215124694027019863070945365594347906839084243063495861098615604832188494848264035296938718030541218257406676173253369983735399168510488452617598053772899380956973666897481097810036639278397349493394604790981998697495303564979908434035737439227797531997361752672920617738553145191137959067288223909572433394475819067715764508086746611971047432758855944752047562858174883239558144610911338250574719141701444149179051098331565476276058064784793342362876529588624554368437151562287982193611256931311184143337185084174584905807277541478991888025397677737854973828996117140832333424058786110530902391838337223149424522395470360116238271329557179450948592047940597063580799084115975308332626533113716020351097326274788220297299950008721467167811522549730570586244183113401116599451829297085501933180010133404286429663487443902596983774540385415603588036550142858246228726084188149201247958528698511372617187849124813756952234452382677955017687397031470825984544091939959499304352200850241797045993792322511168553715724707536652453579065921281657198802016162298794934573312471338380784924290865393439816734793742716686960216326202685126717580781632024609072980446250150052785806197871433382299167213522520281917140186453927017630411126180971235725072213951285780368113415254579831199593770852815902665710624138208931185488517033914842925524436877616279100991
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 22 of the certificate chain of a 2,439-digit prime (196 intermediate primes).

Certified number2,439-digit prime
Certificatedownload
Certificate chainshow step 22 of 196

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009056976873 --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":1100000009056976873},"decimal":true,"detail":2}}'