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 #1100000005691425083 2,245 digits

Value

1559021506…01<2245>
term (14319^891-1)/(14319^297-1)/262594249083451864612426141689457804116417995379668…
Is factor of

Primality

Combined N-1/N+1 proofproven prime

Proven by a combined N-1/N+1 test (Brillhart-Lehmer-Selfridge).

N-1 and N+1

Checking N-1 / N+1 factorization…

From the command linefdb · curl
fdb
fdb number id:1100000005691425083 --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":1100000005691425083},"decimal":false,"detail":2}}'