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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 #1100000009041828756 1,234 digits created 2026-08-03

Value

7882648821218289618749828902590908545341199957929395303972030030475541646019529082545945913168873550860323674112067092796565940861618138134811244653027241107041401665642792146637297343501248847274632175320954670080487475829828785224535143524451740687689022823101640113252655190013266440869420043226886379448928235191395083335952077908783794092410955115185921599772467583681294001028625383616228420618568888572277063356975529430161179455287902424822673271953323892634596317075475946304733948448883912045416842899778289537320924252874913766482615684366350701930901072314245529157413836322032747016726095413032607937684822942284341160706560355705120750488352985844835238851154295175594261557660617964972082290439294881569013934907266613607200352393840511766778065447026391235688557317429199116216291034119396376083189571098098745709865292612656231761041571780280880989297737806208733907739806896840042512912721593948366143517038884482673068445306360598404849837455891227178150187869444706839130251261451914607854119808406032412327883802975426184255603079210952746908544960418835854800075110576093714038574488039958409835496320674084541447716449797936268611401301681226492714713010014014638187202331603524473160088085217337552828794953013
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 5 of the certificate chain of a 1,304-digit prime (109 intermediate primes).

Certified number1,304-digit prime
Certificatedownload
Certificate chainshow step 5 of 109

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009041828756 --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":1100000009041828756},"decimal":true,"detail":2}}'