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 '68178176382455885356197021001328896726973799683231951684254986106117801418073787924702641708440494129862354961716732176057019281481321625087235423770983402692631035367048319312278202391130548617155842745801954892535558247330298582905486299440169286439080192768605769803608127011449525310277751994532840012578767970857137176751162942475428506407232842020777493260133262635517671123048566027507674661122557049796210550436962211226000431641943159787389604321692778253168939540694400811019401094993916873236201718704977383967429450835052029768783795345378958611845822625596781523463392306518270011763932589595604454443' --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":"68178176382455885356197021001328896726973799683231951684254986106117801418073787924702641708440494129862354961716732176057019281481321625087235423770983402692631035367048319312278202391130548617155842745801954892535558247330298582905486299440169286439080192768605769803608127011449525310277751994532840012578767970857137176751162942475428506407232842020777493260133262635517671123048566027507674661122557049796210550436962211226000431641943159787389604321692778253168939540694400811019401094993916873236201718704977383967429450835052029768783795345378958611845822625596781523463392306518270011763932589595604454443"},"decimal":false,"detail":2}}'