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 '457995285589840270224257148704818539635958258467715815185429752474186104112133031279504945532005069487790952471306485121679720966300264181493950010876991198843033999413800467581955199418633867576026499514682336568137729850156173894039929002392685752905248359771490384677466661838846054021786263653935736015981761843705501676621981495720469315820180219193199791142125002821292017718657067805391520069216829511933736357193984293712902723102153206280107892407772094713922289876583625579037975933224158822389790511778886646843536935839346706172705422322024462273849465393012990065942017799487174328542300156446219442036479527341588657385570930657288176407241064085942212067196984751871182256719840585058498611110796951942491174210892186522781433946704847160212510762367703586052781339947931552322937619094054613933526578956243874529557555413581961224862416200258839725076314988135167026470918014510572192308527228626242854803022459519555301119564283474856318136365020761406336474908734403813644818678472980810239770730642230230911471421800667638716716240693806736443876747749613849034153971587718770786769769091663461605503361451537326580440320993025291224141064204570076742212996078925813596685237291041078991366635002175196282692228744233760774125322050677400529260837215179023244586911648916744624981456168339997518843914648008055647149435230975424095022028546439933216373777' --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":"457995285589840270224257148704818539635958258467715815185429752474186104112133031279504945532005069487790952471306485121679720966300264181493950010876991198843033999413800467581955199418633867576026499514682336568137729850156173894039929002392685752905248359771490384677466661838846054021786263653935736015981761843705501676621981495720469315820180219193199791142125002821292017718657067805391520069216829511933736357193984293712902723102153206280107892407772094713922289876583625579037975933224158822389790511778886646843536935839346706172705422322024462273849465393012990065942017799487174328542300156446219442036479527341588657385570930657288176407241064085942212067196984751871182256719840585058498611110796951942491174210892186522781433946704847160212510762367703586052781339947931552322937619094054613933526578956243874529557555413581961224862416200258839725076314988135167026470918014510572192308527228626242854803022459519555301119564283474856318136365020761406336474908734403813644818678472980810239770730642230230911471421800667638716716240693806736443876747749613849034153971587718770786769769091663461605503361451537326580440320993025291224141064204570076742212996078925813596685237291041078991366635002175196282692228744233760774125322050677400529260837215179023244586911648916744624981456168339997518843914648008055647149435230975424095022028546439933216373777"},"decimal":false,"detail":2}}'