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 #1100000009018804221 381 digits created 2026-07-29

Value

894486875011412194300880896923968215714161426709714301899639350308572196182589462164310244073511671400021277855036857903745357946692280028213721252171820769030451570068144325202432779529324771094119597852458274891428776714181987641800795005145838205663005437823581542898845589401647873796604275172742538724557264783734694026696294666506673161983912788869927664710488894340651106551
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 48 of the certificate chain of a 1,026-digit prime (70 intermediate primes).

Certified number1,026-digit prime
Certificatedownload
Certificate chainshow step 48 of 70

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009018804221 --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":1100000009018804221},"decimal":true,"detail":2}}'