factordbrpc · fdb
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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 #1100000009078081389 854 digits created 2026-08-12

Value

21584536991609750142831222473101665861348722829764542271942711334004914442510111323451509813487789449113257852106791044095852440334697711269391630720811829888842022712980847127413173462907765148487244000827201390552399615087615629506255441315697631693466675970951563100086281815129064141227523423859287711643725709534334528857948488830091867689321863195826234763833698585412699457764752673924044184642637871047565193876136398406844774295308145219189815811609805059098776494187498258298154088623073343267080660248241555487831318924077064015697020333947860037687737243513169109974564159482685900581434314813195736923661312979939710057705457520601365542025856126321340242783834215268551643383976100725134530718156567522389274104501900141600042997005102656736472513213491525912550206806242826093919892009750282308251902504069765337168592106315892770107091867
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 96 of the certificate chain of a 2,027-digit prime (153 intermediate primes).

Certified number2,027-digit prime
Certificatedownload
Certificate chainshow step 96 of 153

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009078081389 --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":1100000009078081389},"decimal":true,"detail":2}}'