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 #1100000009072857709 365 digits created 2026-08-11

Value

85079561403534976544138647775961906712872925286769801556377565030439154916959047414497297384244846342255194994430638544659444567383514311700043965182926089469535592695462356429666110429965979283402432160155802147277172753286658838779109055809572175915397158159372962110783772678215058819093232641285832066276414991244946802310062286586226958316554358931780717505473
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 131 of the certificate chain of a 2,006-digit prime (156 intermediate primes).

Certified number2,006-digit prime
Certificatedownload
Certificate chainshow step 131 of 156

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009072857709 --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":1100000009072857709},"decimal":true,"detail":2}}'