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 '20434393799579723749677024758313663036688293247567189097348510376592481143663502092045944304669464555373883163355485173368856067915023309750420807097934876678791794196648445385379341409819296337608354773075162069324141789637961155462324403105552817619617870300563505511711743854863982660958833887482365823449697297983939210067649787127331673141267002902898121269216734552524332716463105865812469911619477168956380736533368408552472460146186815433859991367991216392534537627761465062986087112049670845019785387288792063470016319175124124219412759184874203498858958491727459571042262511404163508650542122522575491007837833391027055225275049838838695504234347353972256223887253742511552392139911879323508982281666652567566069543046455918849472006236288876981584736449234133590404051030342089027702293540853490050553474806062546359647192380606313586520209166440812060893434444301896359346389538384367095898348544099921839394250860278699914211335056945606228826011447175336636649808101492964218975330878214642829279245509193789644797412552444878839117013233038131602692966388127780588311500410263734989108998157433220997205100851957660617470762022430505654065633366461185223574751280163907972090510846671536883543084421532203258817370100149744092229151226420213822783196539362174886681614881353319933200852489772270455687230900641676970797147544213182855246228959840247253565280904657930772631516898263646160431736552238290468233989876044201239583050373265441995031289652424785285957709999093878384668713817408589953254247294416327639401423828838416398476553299206366019209251285629187' --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":"20434393799579723749677024758313663036688293247567189097348510376592481143663502092045944304669464555373883163355485173368856067915023309750420807097934876678791794196648445385379341409819296337608354773075162069324141789637961155462324403105552817619617870300563505511711743854863982660958833887482365823449697297983939210067649787127331673141267002902898121269216734552524332716463105865812469911619477168956380736533368408552472460146186815433859991367991216392534537627761465062986087112049670845019785387288792063470016319175124124219412759184874203498858958491727459571042262511404163508650542122522575491007837833391027055225275049838838695504234347353972256223887253742511552392139911879323508982281666652567566069543046455918849472006236288876981584736449234133590404051030342089027702293540853490050553474806062546359647192380606313586520209166440812060893434444301896359346389538384367095898348544099921839394250860278699914211335056945606228826011447175336636649808101492964218975330878214642829279245509193789644797412552444878839117013233038131602692966388127780588311500410263734989108998157433220997205100851957660617470762022430505654065633366461185223574751280163907972090510846671536883543084421532203258817370100149744092229151226420213822783196539362174886681614881353319933200852489772270455687230900641676970797147544213182855246228959840247253565280904657930772631516898263646160431736552238290468233989876044201239583050373265441995031289652424785285957709999093878384668713817408589953254247294416327639401423828838416398476553299206366019209251285629187"},"decimal":false,"detail":2}}'