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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 #1100000009080170192 1,872 digits created 2026-08-13

Value

888357448062122921695045384246336765219235783895488408739363083620967935369173261611688748644029210468692875063760777654251588294163043592411997296508966430711739754402216151193718226046543548653461766950491159291878688982103801868498700274153593014675292496592375521239201268544152465009900610280640536054341450643051109310238036970600468668871384472368827479748890665506066381572156665773571014679035334603001590158937378400335728083302288156134301543487911819683786542841163088517408475210734461342930896296996628232487280500507221742155418816204981822185853183441329874305896622787953373983166957270001220183216041623087545267574912946017650197369201924610916749970230671426265979157130490383064595526182561482379373933496871727955624414914883164704665465065918792586420274980906663075544933780399587801787705156906843639161239154005504424587601199567154856578524243395609125902160952078183148724908309082182556634243076766818151589068549069880973916749477562737307605429921184827553812506931849426765342970010093697790723244594654549813481998347517913368832708472703693624027318055406200379684001856180813498943132105492834111243081270656433065008410027883051082997073859971454622022574573205793986072469472371666774903022263027842164671235440749037128403207237029617594033014108716409091092847778402117615685340868562041994617392419749145683489977893949312965946859143518824108326939989189876651744317444184234112119691827515912343692931816141309285973062459992423870594145671892026926603117362988906210157901638066607738952340813276887134473183844795672166240892957484811156264791897422750429938618415578951940322047592978973478461089062602230786910126666293520599793717608294365267589165509011449242454794128461903042475150658960374407558930173728921738459557942505641482613966679461668949078037498716517404086889807946710411072006271798461275016526499107958319979
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 26 of the certificate chain of a 2,172-digit prime (170 intermediate primes).

Certified number2,172-digit prime
Certificatedownload
Certificate chainshow step 26 of 170

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009080170192 --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":1100000009080170192},"decimal":true,"detail":2}}'