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 '17717872585144154959179569999628104430623588361558805437436978095171601650409533057526442170780896553279454580723489807289186504644403289475036251316412085827705661696534036363236192203756259591317198098571457932376476919461387544064939519250837848131375112535082118161885859969521185584240583200076354707799953831156579847376347686928580167032441813195724451111116363067851729528329129311303678463500625171104687225505944321018560765243744604325494017404420121161550216183235314286775429299255346904281369042490620366882240152627257235286630182707747506408367579815684051770744618380226931866958398367766084986330924972747704365230658032333357801170840402734444650985219681372079687659606588396387549332593817340956861101336914472214165844532671922689701919558521875907837646830505358178097128625983743977748152543602762249303239992937844610689133356165869210904673446539244593788116078750552619844212515104319819813102342737592880111242774364431894675791794136124267844688284748972431550646800201950004499569694813476364996100721530607116792477461025864559800934583864400408739818992845575359291776048646494376328439094068398271318494767432859857196264896583484607858658763187489859130423485232127749366877' --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":"17717872585144154959179569999628104430623588361558805437436978095171601650409533057526442170780896553279454580723489807289186504644403289475036251316412085827705661696534036363236192203756259591317198098571457932376476919461387544064939519250837848131375112535082118161885859969521185584240583200076354707799953831156579847376347686928580167032441813195724451111116363067851729528329129311303678463500625171104687225505944321018560765243744604325494017404420121161550216183235314286775429299255346904281369042490620366882240152627257235286630182707747506408367579815684051770744618380226931866958398367766084986330924972747704365230658032333357801170840402734444650985219681372079687659606588396387549332593817340956861101336914472214165844532671922689701919558521875907837646830505358178097128625983743977748152543602762249303239992937844610689133356165869210904673446539244593788116078750552619844212515104319819813102342737592880111242774364431894675791794136124267844688284748972431550646800201950004499569694813476364996100721530607116792477461025864559800934583864400408739818992845575359291776048646494376328439094068398271318494767432859857196264896583484607858658763187489859130423485232127749366877"},"decimal":false,"detail":2}}'