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 '7192156410111528761785195956454741084419677436454904319321574745368480848987779019890555485080912910702390438870059612180208955303401435246875074474898810468657962083621173948830362582194175286916400313349370842349323702979724274371062419487716587459078740269059699854247750295019229692877085808337166260406766283997290129495055723629303452747027447028256192610462036064094899755772439487486598471208286840127715948964032495041599386907105577750035088241603525829734622739335075051554260673832433907619115646329523820917452314902812802896793613965948634366029163934351789691744690050007665622647378812364910395395679400075298554280407826545202638046205246825871485989117809593590019821418186854664354648108657359740536316704883211227582959493832601396760813880125001034180085961886188376763834012791304601327431457122746253508537234721860081819315020846552967527309796185820611785419664540402835577134789189226600970317411888067149152442790947004313374571380350396396296984270090583453651001116039336545343463618403906804773701429632925191256630526606956521075276389237244296604999986901164890859359563599813719310990686538411942859403349950284768441747254380530099368179693840037' --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":"7192156410111528761785195956454741084419677436454904319321574745368480848987779019890555485080912910702390438870059612180208955303401435246875074474898810468657962083621173948830362582194175286916400313349370842349323702979724274371062419487716587459078740269059699854247750295019229692877085808337166260406766283997290129495055723629303452747027447028256192610462036064094899755772439487486598471208286840127715948964032495041599386907105577750035088241603525829734622739335075051554260673832433907619115646329523820917452314902812802896793613965948634366029163934351789691744690050007665622647378812364910395395679400075298554280407826545202638046205246825871485989117809593590019821418186854664354648108657359740536316704883211227582959493832601396760813880125001034180085961886188376763834012791304601327431457122746253508537234721860081819315020846552967527309796185820611785419664540402835577134789189226600970317411888067149152442790947004313374571380350396396296984270090583453651001116039336545343463618403906804773701429632925191256630526606956521075276389237244296604999986901164890859359563599813719310990686538411942859403349950284768441747254380530099368179693840037"},"decimal":false,"detail":2}}'