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 '1244493785623398018337373276498045309501940723270038067476276467493243502977380915116798278207960396552654089072301381301071907984075337384364374452880949630051687812236858839515898875774393098907609932686995346422764127075968123592599970460175106587017193644755623871545365235941038992434630827707653967140303777324220586912385778393891842916716098053591680401286900767411551617490852071254598093144862149099399289126930735114521479675960033925916289872187729006189213803055313719267436477380541073304466984160281392120968637185296712955144506878143004523155493640904507425381009401041957952809622783720573709240907495996964269411789729761010858818209471288103212107544983530303073931702227671220119601670038643253789524654980141818970227248012166268111685147644101308188226641709250997753003166782886855250978326838833968481615679482976865310135969562126815103954541797432280536672172501232120637187020578584148575021303533605920307558639462957797321111255098426515377555599225539615806814651817937037430435446598340713018117169507395056211943554736028655488250513180398422247087648757601876961028442829877942425737896234876225961012033899155127064701' --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":"1244493785623398018337373276498045309501940723270038067476276467493243502977380915116798278207960396552654089072301381301071907984075337384364374452880949630051687812236858839515898875774393098907609932686995346422764127075968123592599970460175106587017193644755623871545365235941038992434630827707653967140303777324220586912385778393891842916716098053591680401286900767411551617490852071254598093144862149099399289126930735114521479675960033925916289872187729006189213803055313719267436477380541073304466984160281392120968637185296712955144506878143004523155493640904507425381009401041957952809622783720573709240907495996964269411789729761010858818209471288103212107544983530303073931702227671220119601670038643253789524654980141818970227248012166268111685147644101308188226641709250997753003166782886855250978326838833968481615679482976865310135969562126815103954541797432280536672172501232120637187020578584148575021303533605920307558639462957797321111255098426515377555599225539615806814651817937037430435446598340713018117169507395056211943554736028655488250513180398422247087648757601876961028442829877942425737896234876225961012033899155127064701"},"decimal":false,"detail":2}}'