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 '687324635614303063500411932626793332025349289160159803898928764429817700308675135896775407147601994824504422919490191616123251428251197117943772242392457282365531907529157761940966718257516151600224809720608592463284208515449218553882075429935719650079826897899250261228687493539625702084724735180682291423123424410014475430643156828275681787377829488185777915125314547510226734406033880633942539720122719231230405702179812082235027445139298661183417762510919771161512926100919607778689862917507358979598951043837862380121615728626861729366199196649467325289633144538434185482883716327740883407856638032069402698920279462711793274686551023556296641276978391164595908533328635878026194581025303631546980939406326649050547219825905831212249906865510186101220625638659598764440868430108823373721776598833823938942931429759683036406078374958158221050406261018746206772989644032120389457961146281613280200084449741955089072312810007134823915915832623604167018612667821741762647857751238002656751007962189272989897407623757835333690430498945787040353918429027332655361881882149455476907257905519078761139207704723998319200142568945620515801' --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":"687324635614303063500411932626793332025349289160159803898928764429817700308675135896775407147601994824504422919490191616123251428251197117943772242392457282365531907529157761940966718257516151600224809720608592463284208515449218553882075429935719650079826897899250261228687493539625702084724735180682291423123424410014475430643156828275681787377829488185777915125314547510226734406033880633942539720122719231230405702179812082235027445139298661183417762510919771161512926100919607778689862917507358979598951043837862380121615728626861729366199196649467325289633144538434185482883716327740883407856638032069402698920279462711793274686551023556296641276978391164595908533328635878026194581025303631546980939406326649050547219825905831212249906865510186101220625638659598764440868430108823373721776598833823938942931429759683036406078374958158221050406261018746206772989644032120389457961146281613280200084449741955089072312810007134823915915832623604167018612667821741762647857751238002656751007962189272989897407623757835333690430498945787040353918429027332655361881882149455476907257905519078761139207704723998319200142568945620515801"},"decimal":false,"detail":2}}'