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 '415558607025734758904586023354425336545803369535902206340909868838735901155119122876468502111778393674442138218762564372915547319405193214749302512827581999388387555400327394667170998981553854430984150339372119405925926661096212610090316552348300179236343714110831969029905689387483741192299529085995771152168447867294930207911818145418113180283452558069744936417442118249579805812284377103446114683343434259109975371724771923010086103333355915178604472978731490041882029745099986799749987663015151001183618868009900470204573182735514888780563249916578205737590679040720170304453700101276325347' --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":"415558607025734758904586023354425336545803369535902206340909868838735901155119122876468502111778393674442138218762564372915547319405193214749302512827581999388387555400327394667170998981553854430984150339372119405925926661096212610090316552348300179236343714110831969029905689387483741192299529085995771152168447867294930207911818145418113180283452558069744936417442118249579805812284377103446114683343434259109975371724771923010086103333355915178604472978731490041882029745099986799749987663015151001183618868009900470204573182735514888780563249916578205737590679040720170304453700101276325347"},"decimal":false,"detail":2}}'