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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 #1100000009072857190 1,640 digits created 2026-08-11

Value

85825078859904670660903214941098752031034874713832994100142387773322912043612185072798210971463196371810177796966187355035832831011842783811047691411055326937249471934866183639883755962041884379049452502189745330555002107630111560524379710705277216426197599794552747056870421251477100397525428151436539451748924608382554341519990455967912572213271941211954400831991511754145901870042469835760579512306937890013891145574637742340825690205290676802565914327904896360446842860762622387404355759654404338402037470988795818950151937365567211398927600253231982710194646317349665840159063246422340592686654213933475146279670276480645551467817394016851948602600553484208898863722729025838608584892954377481591967122651627218029111461337215763701861057209377649580262147578002434013846733376264730703225097032505984538240378837942583168219681974655084338562359950949800612553064784333688680860138847689990396816312927367087661112163747166189527048336916222951249117131126865864028315320248263998766148790179580742161425319093549954109965151012497954740752725965623249349102025792866133309042034352105021924690737973036755822644220063475833367321980653400605657869869598728183100003397343305641945772189689833475004631524906699997925054298578204476018844983530923544991072078524261892342319479089757153545265042825689839089728728194268823193810425451556546471029449133279696063755862608725500886045966048546005611657732524655481479589373375650041632250059487916997528909778727422249238587148195200404250281545629403991024433177111757827006627620680812377588261360527476482782420495420933707385103051327784723111912098907997653692169375143592991181751
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 28 of the certificate chain of a 2,006-digit prime (156 intermediate primes).

Certified number2,006-digit prime
Certificatedownload
Certificate chainshow step 28 of 156

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009072857190 --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":1100000009072857190},"decimal":true,"detail":2}}'