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 #1100000009028769843 908 digits created 2026-07-31

Value

88155143525412178853656502689616727395846131427126849786984899804462668606514009965339900208084024726074753518715243005305342702750260512170093451831330397908494099612434525389500591095117556101983424687521079647641672897986326562735527897577078471518371879191579626916091502533591677256924505664014663339223592524195432945440849618449043935310495167097605284556591281673783121498383152433325230549996480762069405109441725652515361053066877470365926031340498553371126042044987632748185180303618392906886399499694737598823040859493884711244300747360064348443195604037565224858035686259286010442623896392272097759674060661302226518568088565678412973969633777749638615250969036269891979864091778981867835763403902333974970487729301974659770685795285304914081814370759542213336225494343776799253197869089543797064791293669648929289629253596304994971122305278230373961000332651342817474764709182864142977208707663
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 27 of the certificate chain of a 1,221-digit prime (94 intermediate primes).

Certified number1,221-digit prime
Certificatedownload
Certificate chainshow step 27 of 94

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009028769843 --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":1100000009028769843},"decimal":true,"detail":2}}'