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 #1100000009058005398 681 digits created 2026-08-08

Value

128641307619991254344450862423890073501454392220603265731769279896783751903625855939990095971492654672068970152181306362722207087896577429271577916099908551170812055481224981987932268607291270558712283437114835694532129601894057020124545926056233042682764047002983462208878410011613048307603521698668040130729398751787965542756508780530079754127867222714242845910283837071210424970453890202208902453009525637986614922099558431901355401989174841598741182556825187060733424058762464041443995995655738299952528170747389526006395443005209456933441647199532482222233270927920399171336810833327946286988003562920041443735085589307890039744997798657426041425917899359624439121949171006631
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Is factor of

Primality

Certificate chain stepproven prime

Proven as step 86 of the certificate chain of a 1,678-digit prime (135 intermediate primes).

Certified number1,678-digit prime
Certificatedownload
Certificate chainshow step 86 of 135

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000009058005398 --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":1100000009058005398},"decimal":true,"detail":2}}'