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 '67754268359560733954472627973647785897750567645980465258348717268088862176701892749824211254544886770023771399536093589971170762626796514981478273155457295539288613327266579751360044067705898266504648814041390571637117303822713265332974177358675637315398916217882477701434386508286387553147715904834575541219146628465408582367049663014845023487736353729190552378735497887179192212721985299960475985342859587676401848410506156569059860665293691249365960281237294748465740308502162398633173192089635048456473635141021847166445864847594251493361504431101907205319170155414972235421507977560718082221369668786702548602148299550053115068998924946716657547630158316794814577614623633267453999385941029649960978651328468876920171095010151194239471829666116773552724564449090918567089793425549169575322550774066834965879115049883731337258720461134746427603631244637105886916733339019770250216694890713491197404080257335587996369655198993535625506607266853225256621699858319357355117711500381500442115493854221077498279047537145330290269' --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":"67754268359560733954472627973647785897750567645980465258348717268088862176701892749824211254544886770023771399536093589971170762626796514981478273155457295539288613327266579751360044067705898266504648814041390571637117303822713265332974177358675637315398916217882477701434386508286387553147715904834575541219146628465408582367049663014845023487736353729190552378735497887179192212721985299960475985342859587676401848410506156569059860665293691249365960281237294748465740308502162398633173192089635048456473635141021847166445864847594251493361504431101907205319170155414972235421507977560718082221369668786702548602148299550053115068998924946716657547630158316794814577614623633267453999385941029649960978651328468876920171095010151194239471829666116773552724564449090918567089793425549169575322550774066834965879115049883731337258720461134746427603631244637105886916733339019770250216694890713491197404080257335587996369655198993535625506607266853225256621699858319357355117711500381500442115493854221077498279047537145330290269"},"decimal":false,"detail":2}}'