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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 #1100000009123004861 2,481 digits created 2026-08-30

Value

859591127222910561890403310422598814822953650720499088096266649347321525021804506890933432198034458272543403607321398923420949482487691460869735901381411246821438663921492665142636310178005749557515652811888573816106797377061240740962500761093434994144881774276726691803398491903125197674027304180901652681046558425105439470340159510506164356775654337681171304844067963904343152297898899763493162592467276858812554649429901228384248120829984364786476771303405497525648285687969614672255014680837795361555211921798861892430116538970593199761227285140818987225590649740490803626824815971735019733569241356393454638396411784655306556455591553931297467177164074616800487023424802913846890922341488324568404039336387960508089623825713016134136100971374187712947495118004098697181658781215207315235438340348127920661853089812089510125909050885829062375521823688600992556351785765142096832445501701315246571473407098408897132416487911223799972201680683999366569882663671961187641588054957786823697653580452107407184102025408750380668072498891764376184150264161402028277190603826921600085305840631194175019523708342808983011015322429907111736888475710678056900042064466280660943149790268585964633032954454301335835463015926037463844555203897857258896939546148299797172556967040694567605093770818657848835920927895896638786366551540920541616504005554733807524232786574175905314715017762319405957149303812002726103950522724239422172135121007742080822344375312648033929893834230464515471111461680209513736318701552440423240424061216670558043432735840967045238156211477918017474232170613235389577882657203648084398940658735855860762430799503510055480378885243809951217808293073285766746933868906110790121127840591080857538332630486030117425962760604820933889235305169096865113291821305850616484592626891786428766950665878282176942693531367869504640727249356499510199554914806588890122196831221573933429907775331147495634235341514673160459454282407580152909813983365241769986124216897454486702178182899914460439232628399462177443966419364841094276973015779411209803139755241484234336309614176615357598486418159792157186226078996610456264739018185563070420593954842183775141732351286572548115478905068361686311690790690246866022328735111818911028384752284481207121682622734757841665848078902006599871117018955173058755773065425806765894605829302143078251459696935425934353982512699368592547435963263065016295933447567041049492029808176096497358179587869496965027283407460403715493933556992932881
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 56 of the certificate chain of a 3,053-digit prime (315 intermediate primes).

Certified number3,053-digit prime
Certificatedownload
Certificate chainshow step 56 of 315

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009123004861 --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":1100000009123004861},"decimal":true,"detail":2}}'