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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 #1100000009041828717 1,288 digits created 2026-08-03

Value

4080971858788495589496241240747254510870992239162093344094325088490714136700291310042744554077914610125835309186052710433706069511561456502015654498415318244276255251754638546657452599871279633202379975273700141056073442205324446068343457265047187598477483225513640255180348281208219290846238696346279311787567833419571275350777749368457229465330198812383305393129655205671886544910449979023626702298010681581891396784723136518622662141853063742846769153801920797157319256370500424192604976916093758082958346911762511210235217314247890287444880716382648429201685833925826472672875996635854858823291410466549779890707912630022439745965112543998637987259494780309619693749973289641682781461213787982288491998576728603169664752004715945222238313640707918792823502793018722085219461822494540021739721153278764842036195826355500235553277941673787259759507952258406401612997684756339240967231040161881479476618735457051978684092870551153719213724024312339054765685822052533381514424612064648930435531657995654671759409875158465660357340233417154232895864286080367469342181868030697239430677405397332597221418469270208227074062293751007486868053159842520448142386032293519625272281741329398033408337561455335947111287412933901714964090120104468639325157611302130623165162103202890126915851050491
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 2 of the certificate chain of a 1,304-digit prime (109 intermediate primes).

Certified number1,304-digit prime
Certificatedownload
Certificate chainshow step 2 of 109

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009041828717 --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":1100000009041828717},"decimal":true,"detail":2}}'