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 '865761795509111000198129662335812923431361013095633688405021206828166785491459141849615386315889651781630254533157914492182014957952873225940481157511389847226525206762852388341082321874680129848649254881284552139148773864316020677999924156186673747731896514420615324485581608643874806015731651150155097296101484856559371407907314811140158658384876173765838938709872008350649135249583081332964319875244184974063659897695814481969848376219060130221693534055927554452994181955184567192072433937394618188634807167303700905883952593' --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":"865761795509111000198129662335812923431361013095633688405021206828166785491459141849615386315889651781630254533157914492182014957952873225940481157511389847226525206762852388341082321874680129848649254881284552139148773864316020677999924156186673747731896514420615324485581608643874806015731651150155097296101484856559371407907314811140158658384876173765838938709872008350649135249583081332964319875244184974063659897695814481969848376219060130221693534055927554452994181955184567192072433937394618188634807167303700905883952593"},"decimal":false,"detail":2}}'