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 '764394648143830228924847389163471906004797856155245923589398276134348116340732467100309429880154304056336591701146038357671699717999211838443526467756145527171476413931475140887102155357169216770698788132557425000186447993117611406298431258925314656938569346772108616914820445889775324410995279837932422569761554237346189249298150194242314746091707894328931748018001748502130694185002949047751658077579920896634008293773085945984458526794294453133786084401081168588793504816972273316131380680321351837186631728337428324739871182817758091931277456868132843003677407493315791859001303469474344734333994577035253806995185147809371873437810580412148615025682816948812274603379861942009027823825745687362310908480202729810748039017580078193090529627315156386725763223895202640919436360576752310190400773092735528990824714121981312753656448928169566885390399224578640354194529263' --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":"764394648143830228924847389163471906004797856155245923589398276134348116340732467100309429880154304056336591701146038357671699717999211838443526467756145527171476413931475140887102155357169216770698788132557425000186447993117611406298431258925314656938569346772108616914820445889775324410995279837932422569761554237346189249298150194242314746091707894328931748018001748502130694185002949047751658077579920896634008293773085945984458526794294453133786084401081168588793504816972273316131380680321351837186631728337428324739871182817758091931277456868132843003677407493315791859001303469474344734333994577035253806995185147809371873437810580412148615025682816948812274603379861942009027823825745687362310908480202729810748039017580078193090529627315156386725763223895202640919436360576752310190400773092735528990824714121981312753656448928169566885390399224578640354194529263"},"decimal":false,"detail":2}}'