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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 #1100000009075279366 1,707 digits created 2026-08-11

Value

981218776626552295246749780616131951795689686554942956673014510222187754483008491755546983499106119325846915600796999848324643221290531397312921798163632954458311733778972660529240490292101834319783602741523559724775556930574090922238261286099346850282956564524975345425298298583818186552831600036971344002942581947974958621357834146840166093052001799396269189903348868682079634341618379688596728074792185795635851378328653317147452890498072881606664801212550524037109949463571895950364488965749673116914109928353631598544154739585080029746493530997564657910317650355904566196548739765532278864563185558096019211007289978178910139760827918555343775794768273778973609704777334221297123491220081313816834203877458546081552112853211404645551034054157399471930330651860561266264157576330497054866218328158577665448583198985209061744961825498676666852239091203169400068859350918995026539960070361805220731938730933789653258772413892783591121534959496540700331654984174004467326510995816480662596047477132980154276157415720316080200190730682273315976105579707959663334346574890929065770880267955819982545271872067131840597747263991672095120718092409185378169571634682523701549127162628441132040618140654981743849887938689173662227540648903453897603259352836104108989696858902055443714401673504431691901838111055136314071033443622211030909190571106911698430544063780027183874612839902930425775391771753927628859389978721533716307044789658656126121927174453514072358066766701392490021589058491542553400130822175981699953505943426836980803549904092065236266971590578483382941461391640022146028403778840171432228581478529769117126559845147550319695315618663504468249149984896765355127988716180079818879790126028163993
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 76 of the certificate chain of a 2,656-digit prime (204 intermediate primes).

Certified number2,656-digit prime
Certificatedownload
Certificate chainshow step 76 of 204

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009075279366 --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":1100000009075279366},"decimal":true,"detail":2}}'