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 '142866681094475692684139543137774618491650525046837524383247577383615464126516077098165128410475863743014916152359696838022999773456123500694116154083760296604827528192895129275880851160320927704342300056622305476909079196018637191197886566489364500125136536070740013629400561086678313795019746147648043045797891894281943201997710408636130200495162952830967548361874174690639135640712785049243093027254994922140495697867247990637641960631116790577830677094626888707200749275201638597044321' --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":"142866681094475692684139543137774618491650525046837524383247577383615464126516077098165128410475863743014916152359696838022999773456123500694116154083760296604827528192895129275880851160320927704342300056622305476909079196018637191197886566489364500125136536070740013629400561086678313795019746147648043045797891894281943201997710408636130200495162952830967548361874174690639135640712785049243093027254994922140495697867247990637641960631116790577830677094626888707200749275201638597044321"},"decimal":false,"detail":2}}'