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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 #1100000008790791209 2,064 digits created 2026-05-05

Value

865084615045698409755344362917844682725486320145198412850745256941785651453798119284487314264105638510411221761247300919623384791652557788795347296125304080033386055048703721054180665969154407762491663093756562011869827942658868307384241709096541883031894914851855162575096439953929502604917651590246427012121771365035858806702663614829920853148153662154114954233277606640746157745498478915055613040872275478270464282257208758452315699020901972486055353420093778869208949853446253159823355213857251000551157978744357355630980562403239405420237273288670562448648859579919602692544605643921325934876035306420560604389543618309447872172849561140948460677775106712151080938714300992740564962344625524078892401289620593349355353699778643010152072747657263768165989571299119271982089978178340124912294068667179825465680531442841645846969105877948766380640437594924953127320704162680225193137128434359279219607989731208803657682522802961221381009905382688987135928958462730458431850823870649040209636482445159342576891106160670731429763395876182090439775756136233963409922491943153143005125433874308851597690597679299388744692825482374513739116401867954031567661457214803325477052805394490830786959766193503807227526657358968718707769626276912953660429726515838678463712238262703218675744449858040870107543161820884905790431824398041861104441123905570381000506379460222596218057474479600907402493455641774079705196867966798358049693427515366093752761690466979460351715949700241210038854431022584100179422492565852865247650341340965210989988363175298641562823277034435713851766339050991595613735902695102209793674166273911932798428255872276244900982714455237079200490473598571889966190992586354231879246127656000490044677479724731895838787201087228999462472747118128957615150265209404335730662614427868833173811748418545081894367176619123478278972624478586822685575555061784084290063106562272572189308148905520723187215983141561083218262248069798814109453110001710301760924599332136940288239214174252264277051712067042490552145287566413543876854587184799596316047533307887
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 94 of the certificate chain of a 3,331-digit prime (216 intermediate primes).

Certified number3,331-digit prime
Certificatedownload
Certificate chainshow step 94 of 216

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000008790791209 --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":1100000008790791209},"decimal":true,"detail":2}}'