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 '915660779472886028039029291726482030810847174398084959694599666401800236929672414466805020015828158748647174457602704626445014501511089873148831388029796454075613799970053333128968785941121471558164202868888105976494709772161871426745578414150639053733291204933459350622602028543865929444383383327934661613917287936122438465865115249797959072478093232612309842834765397149987314401028083338095251554926575783296683758163608869968211556742825616608367913131948019576482518582096017639780863539482799083532768215972604419638682975562208724329509471380145149871158476639011329952806546742247552457774742569008099170747184128536178151521497936243539274871' --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":"915660779472886028039029291726482030810847174398084959694599666401800236929672414466805020015828158748647174457602704626445014501511089873148831388029796454075613799970053333128968785941121471558164202868888105976494709772161871426745578414150639053733291204933459350622602028543865929444383383327934661613917287936122438465865115249797959072478093232612309842834765397149987314401028083338095251554926575783296683758163608869968211556742825616608367913131948019576482518582096017639780863539482799083532768215972604419638682975562208724329509471380145149871158476639011329952806546742247552457774742569008099170747184128536178151521497936243539274871"},"decimal":false,"detail":2}}'