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 '6640304470466287703357196127424854800923998290102003222924821576283508409759935318278560735859349550985504421417430955537563952302538987937288366440075507320197713258663513957573993602433846532850617449441805323261236800823566873457878291596649843581619574668722402953809868577841251764350712712384730872631931262128678150970614476455478060976695454962920639739620845772586152891304026890320307481677074354716859406745043720670362278151514382948936175308925422250486972383783049117882623647252090595140094139348123892053509972128473392286977216861522361681057596816052655216998123468087798588271431904635652215008909351210534321959861' --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":"6640304470466287703357196127424854800923998290102003222924821576283508409759935318278560735859349550985504421417430955537563952302538987937288366440075507320197713258663513957573993602433846532850617449441805323261236800823566873457878291596649843581619574668722402953809868577841251764350712712384730872631931262128678150970614476455478060976695454962920639739620845772586152891304026890320307481677074354716859406745043720670362278151514382948936175308925422250486972383783049117882623647252090595140094139348123892053509972128473392286977216861522361681057596816052655216998123468087798588271431904635652215008909351210534321959861"},"decimal":false,"detail":2}}'