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 '319138391298805191919591249174800517500687859609941369336348979194371971106666439992136536247620717964238341722849434266310696674981112170862443906945501959262719057366547689834769272886161380083890191928501551647565765621115837647039955476192819956327663980897698153985350942928876572952753143321103145262580546242439939236664908350488470295140486161535051943058813643870989440503047278983249919581907886298810793023111111938876622460520569513' --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":"319138391298805191919591249174800517500687859609941369336348979194371971106666439992136536247620717964238341722849434266310696674981112170862443906945501959262719057366547689834769272886161380083890191928501551647565765621115837647039955476192819956327663980897698153985350942928876572952753143321103145262580546242439939236664908350488470295140486161535051943058813643870989440503047278983249919581907886298810793023111111938876622460520569513"},"decimal":false,"detail":2}}'