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 '1982880179696577497530364594095209026122904144154350946684492969920611061997540196991011355713209681147769737174727696296435285267222601973072031458741715554855263341957524339741600101519928512277980006848079576564191875079636192497129025095890377237053876932918447648207120108954103510904791968861716911143446097918220882323389208378730617422891969360311677819412512324615926624315467051105071950064330986960987820514150621310565511870896330955691346519470169542603099497840030336349266748339187159832175327243752253282288781971677180357867641564224634031598230636421165310664541504576211728589140797743916793256241090689251775010741860467770268414901041610881707923244215645758052674676016061178241472318567580330184068331639707259870729546600010307801158104662360553623168921602889552984507277711831507730221342008900443287827667567220499821301796581758406329905514586298842051604754048648115538338754411204763201350530267760070617949740368797484955397049946440961861312058410352740771028463770053303799920059731114496298557895939711315778274796104536419292578440058081419475907592865826492737963287166085991987994676215299455016094416649749681435097046997048144100173444728519582824509224785816368555056330259326205873687809681673300255555423057675353599369859928750855058787408704382002675998968840665101845270074461958613025709333055740897328855218462289545887839892063444450453492520680334761918243177038944798503095831035344262179339343302752829973765080164498979780365176443826211889558273037581069516973602760622610930637555119780359217001691857444630678866798775427884858197233463100231519445026240484308700591856341479827173062331354946059904111766511594453472138582370630425814367615179308991636705662084968524565316720413345931199' --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":"1982880179696577497530364594095209026122904144154350946684492969920611061997540196991011355713209681147769737174727696296435285267222601973072031458741715554855263341957524339741600101519928512277980006848079576564191875079636192497129025095890377237053876932918447648207120108954103510904791968861716911143446097918220882323389208378730617422891969360311677819412512324615926624315467051105071950064330986960987820514150621310565511870896330955691346519470169542603099497840030336349266748339187159832175327243752253282288781971677180357867641564224634031598230636421165310664541504576211728589140797743916793256241090689251775010741860467770268414901041610881707923244215645758052674676016061178241472318567580330184068331639707259870729546600010307801158104662360553623168921602889552984507277711831507730221342008900443287827667567220499821301796581758406329905514586298842051604754048648115538338754411204763201350530267760070617949740368797484955397049946440961861312058410352740771028463770053303799920059731114496298557895939711315778274796104536419292578440058081419475907592865826492737963287166085991987994676215299455016094416649749681435097046997048144100173444728519582824509224785816368555056330259326205873687809681673300255555423057675353599369859928750855058787408704382002675998968840665101845270074461958613025709333055740897328855218462289545887839892063444450453492520680334761918243177038944798503095831035344262179339343302752829973765080164498979780365176443826211889558273037581069516973602760622610930637555119780359217001691857444630678866798775427884858197233463100231519445026240484308700591856341479827173062331354946059904111766511594453472138582370630425814367615179308991636705662084968524565316720413345931199"},"decimal":false,"detail":2}}'