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 #1100000009091290505 564 digits created 2026-08-18

Value

847451970379486365792515735047275676269716881782897042097548569413848807021293529506190281231697741695898859783888668908905457290492965746896452120029062681756748691060714562617585753381038227931546680457939091775273760406470471447840576701357104063798970418962793808310385988423553143763038646688245798596719531047316031308458651594934500273404497610382680069550990736719024586873666257690418761980205139797013112779627694581759422547096117845347872493337600157229185344484043572729399423264892435851084328140209989849264761907986956006649679689404694307161023927
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 98 of the certificate chain of a 2,095-digit prime (129 intermediate primes).

Certified number2,095-digit prime
Certificatedownload
Certificate chainshow step 98 of 129

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009091290505 --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":1100000009091290505},"decimal":true,"detail":2}}'