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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 #1100000009072282386 1,901 digits created 2026-08-11

Value

12666948613223720135116171508876347485630693679443174523533830906679636004542760211559993153424250751345058459102199519526650922339168054473705605279297651062000602995493875905308941777203518270903119005481148054670372521294555198695773231628477970556948159562643690703308870430497879902859237013428094258824392809095224032916928284151848030188876442721323441812608320433891899156167177164482904019599783677782420053193179464841591166313209071236555173603969309933153076742912109527585595033206033456813648049232987478718297627860313190094471479066236712761795969031754828714343166659668015257291229704490816658156603098621617810476668490857968938466298764317940435940355478921789314609997570931402202032491110252302560724478070005885295627807165375639120775195318206293597465555058594654095967895044617548650945146217023676485170190599014465134974163421647193667396079860476616412135712637105089421100110821357616680008512736109952771680584651388671109657689235594826681592762521215353273272571177503193054160465079773115779509788518262598513020560367231882452730576207378190120485392200221713231878526557161865798906990212651586900073597871396659766207398048272901285201271299899790846674966144379811925433498127825933334137758738803271636317476009179311851060221553242850472814648676530170213453463745540525183990791566094324314668178413607995365291971051003719822339343897560530041509357012938187656746724928295460838630563767414387208854333858149355456903401335112329202440948380360273484729563955785438562835901410340357366202668326243115711805521431116799416768480876409468238544917300823936804549780574872695921645620176907197078083865512433153825849560995579086672864160498196264056500935224243904567633216797687040184150938318150489009020657973846252737517322248060658117332635169009096946992839101115094467447361945927387590372890012115937027708869910480157158578762311523157702524065398263
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 20 of the certificate chain of a 2,113-digit prime (172 intermediate primes).

Certified number2,113-digit prime
Certificatedownload
Certificate chainshow step 20 of 172

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009072282386 --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":1100000009072282386},"decimal":true,"detail":2}}'