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 '78926216761847923224729484196688594733402702381220259513897533600320435530653170071868021746209349374995429603044889593388924738182669825844129301393301151158886414576597961293546687133073589513406949187452434566198677366087108499196220723360415922693680700760621426719582659758891643036635482112324529927804173655035749752237652714392551876006132344664068516436255513003680393445584934175633250763878380851821515942595947002878582888523846569760185447769885358731171036416034578798835659202101877427433297050781903214367559380553021778728617354395949816187553249864351473091058897989251481420200370412354711493858368982387' --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":"78926216761847923224729484196688594733402702381220259513897533600320435530653170071868021746209349374995429603044889593388924738182669825844129301393301151158886414576597961293546687133073589513406949187452434566198677366087108499196220723360415922693680700760621426719582659758891643036635482112324529927804173655035749752237652714392551876006132344664068516436255513003680393445584934175633250763878380851821515942595947002878582888523846569760185447769885358731171036416034578798835659202101877427433297050781903214367559380553021778728617354395949816187553249864351473091058897989251481420200370412354711493858368982387"},"decimal":false,"detail":2}}'