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 #1100000009084007923 370 digits created 2026-08-14

Value

1216311882831690810514730039817789267508284068845122234631371639719923465715596826900682395168301054913084714414657100748335647390502428489552286600054495092683280106272856281959859192262729211003141435915162909401805875469567916344683197206826309212811713940548028163698379043708601252977868699823520088645600469466362987696666338383375076346564915015931160183983910507
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 127 of the certificate chain of a 1,940-digit prime (149 intermediate primes).

Certified number1,940-digit prime
Certificatedownload
Certificate chainshow step 127 of 149

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009084007923 --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":1100000009084007923},"decimal":true,"detail":2}}'