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 #1100000000439186894 3,954 digits created before Nov 2018

Value

4566087769…01<3954>
term (989^1321-1)/988
Is factor of

Primality

N-1 primality proofproven prime

Proven by a Pocklington (N-1) test, base 13.

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000000439186894 --detail 2
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":1100000000439186894},"decimal":false,"detail":2}}'