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 '654968175123929006150546572107754296542819540508572658056876262686334717339409784775398948765262998734665108098389255214608116947464087543026709941051251932985424340768971611155859671069549130268805711723300708134949910223276635948643650977441564477445397313118575799388232430995296756558266008156981645328316919549155140728823393787080754256361581566972772675340756450400182529402222092606241215123834557554026891289484457665073697336138474311134286585348304057449060101858803480287501598907660157214447285838702859743949191008952453519233743216800614219786527829740546222341891777449999459497522694473026145949704058865568149057789606336799341770097102491246447972807213316954222326353072553523125345919108055630243055922329764610439864232225112458030959' --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":"654968175123929006150546572107754296542819540508572658056876262686334717339409784775398948765262998734665108098389255214608116947464087543026709941051251932985424340768971611155859671069549130268805711723300708134949910223276635948643650977441564477445397313118575799388232430995296756558266008156981645328316919549155140728823393787080754256361581566972772675340756450400182529402222092606241215123834557554026891289484457665073697336138474311134286585348304057449060101858803480287501598907660157214447285838702859743949191008952453519233743216800614219786527829740546222341891777449999459497522694473026145949704058865568149057789606336799341770097102491246447972807213316954222326353072553523125345919108055630243055922329764610439864232225112458030959"},"decimal":false,"detail":2}}'