PRP · Probable prime
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.
Is factor of
Primality
This is a probable prime: it passes probabilistic tests but is not yet proven.
Build an ECPP certificate (for example with Primo) and upload it - it is stored and verified locally, then the number is promoted to proven prime.
Primo input filedownload .in
From the command linefdb · curl
fdb
fdb number '1607943202409548424223533304807600829038648238322301276915644459666007104279160145846077432613471559048120458996007068581773616674066209567650512431104619885997691467446450454788427894229702205387768600411496492778310596207571274335526960613864231708624431688827270912093100553552648249242055469033221' --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":{"expr":"1607943202409548424223533304807600829038648238322301276915644459666007104279160145846077432613471559048120458996007068581773616674066209567650512431104619885997691467446450454788427894229702205387768600411496492778310596207571274335526960613864231708624431688827270912093100553552648249242055469033221"},"decimal":false,"detail":2}}'