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 '12474527939499885060739309692757432795198494201486145755555290899878429429309657219922371884427224355829631986592196102413911417746941632586155917563735131154873262890900298730612310622579555709981041265087943276338169264668979565469537136762249535222511188324776420939548120034276837291494371744685224095129357295875540999270414985530224986996109141728986533279853585474227711827636196073481880159518312452018412505512175630659703609326263075433562424611614833390054985534857414276499352598574826979602092449165468481263878445640775414357815531875931993967121379786402361416231514064799225415625025506448798063146944739523288558264766766219980640570682297875950320302831860755945112697088667420723118226789605409700594131092481182878961160321438650897142019516383470414209172315949560943678714997350393829489945450685138275211530488710599240105414575402336466180108123817623648336715303089476933331175417095499175922027708327267167212643198558235281091075446154008943245854423085243124896367764326826832113945755154637169897017311832371958929118497845824464123681436968105370387574189704968273908473052495761692155831072243196285463372910470485670364797202258303089623479312794321422998435544041906085802797885844870107793281111541672566285640869895750607881952100027064834616572782909223813521271205678158288242952292364925195554755274769319520848509167464051723072010547494910324496371305351657669353865272128208969852865578195968943992365043822189273114430455446401145404394926079167979490122278585715931109921079052386529438298719545728133538419763066794584478016277440671082914375829779341517366502328485169350444970402452047571575668882866533854634508547375744507900675344047523437981372504015207511803772981013129390759365266083144596990710673903363690789465072446945368608824030728808110090666624200805907256045735802896912295296410161064054422852581693526089843621682776553' --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":"12474527939499885060739309692757432795198494201486145755555290899878429429309657219922371884427224355829631986592196102413911417746941632586155917563735131154873262890900298730612310622579555709981041265087943276338169264668979565469537136762249535222511188324776420939548120034276837291494371744685224095129357295875540999270414985530224986996109141728986533279853585474227711827636196073481880159518312452018412505512175630659703609326263075433562424611614833390054985534857414276499352598574826979602092449165468481263878445640775414357815531875931993967121379786402361416231514064799225415625025506448798063146944739523288558264766766219980640570682297875950320302831860755945112697088667420723118226789605409700594131092481182878961160321438650897142019516383470414209172315949560943678714997350393829489945450685138275211530488710599240105414575402336466180108123817623648336715303089476933331175417095499175922027708327267167212643198558235281091075446154008943245854423085243124896367764326826832113945755154637169897017311832371958929118497845824464123681436968105370387574189704968273908473052495761692155831072243196285463372910470485670364797202258303089623479312794321422998435544041906085802797885844870107793281111541672566285640869895750607881952100027064834616572782909223813521271205678158288242952292364925195554755274769319520848509167464051723072010547494910324496371305351657669353865272128208969852865578195968943992365043822189273114430455446401145404394926079167979490122278585715931109921079052386529438298719545728133538419763066794584478016277440671082914375829779341517366502328485169350444970402452047571575668882866533854634508547375744507900675344047523437981372504015207511803772981013129390759365266083144596990710673903363690789465072446945368608824030728808110090666624200805907256045735802896912295296410161064054422852581693526089843621682776553"},"decimal":false,"detail":2}}'