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 '1203840688976229764052584926736325543607057142396979812061268257502468049256552967621432973424846710896311222835228835941937511903074972354227656554906205283650477761049257486640728227945165855546654780893658168994320865812834236900756512921898404848577977817378923357108608209859459362630983570941906959360356890337764451065859545658897458745613767159089073541774546204867910362042529198106964095586348662896770529566425990461419223079536411398093773861994646719212659534993850732194972772885682530079875899177739059936661541670492225745156649603708333976753718734251018973439828511821458734396236374467894203282341437927143500275245488029972290959317835435017267451878303288508408086290251459859089212675740360279507410800633091388615801922421721753050638796599775445656576210652741155096432330490712805082170354194147129626371680186842981809227834476309051632550493853423304843419502880729887979352848616878226513569660372779294785939203474590119023223494852969382724276300482820683643770671031061907419553963591013676204970755356594667118119301783062329857675976652620224825914875349149100535910119036091273643468474544371571558614087862390397814479271879305321955346051501705678596050242885304562999156011913323645715285814660482559734342752154883914738754337012352899760407869' --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":"1203840688976229764052584926736325543607057142396979812061268257502468049256552967621432973424846710896311222835228835941937511903074972354227656554906205283650477761049257486640728227945165855546654780893658168994320865812834236900756512921898404848577977817378923357108608209859459362630983570941906959360356890337764451065859545658897458745613767159089073541774546204867910362042529198106964095586348662896770529566425990461419223079536411398093773861994646719212659534993850732194972772885682530079875899177739059936661541670492225745156649603708333976753718734251018973439828511821458734396236374467894203282341437927143500275245488029972290959317835435017267451878303288508408086290251459859089212675740360279507410800633091388615801922421721753050638796599775445656576210652741155096432330490712805082170354194147129626371680186842981809227834476309051632550493853423304843419502880729887979352848616878226513569660372779294785939203474590119023223494852969382724276300482820683643770671031061907419553963591013676204970755356594667118119301783062329857675976652620224825914875349149100535910119036091273643468474544371571558614087862390397814479271879305321955346051501705678596050242885304562999156011913323645715285814660482559734342752154883914738754337012352899760407869"},"decimal":false,"detail":2}}'