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 '38366772073744290479205997655140433598776291510065819413453661297687280748761448362087898397904659782268040267729507702497726391340672862925428292323832640194870846331786040473368566586663068698194531755302054359812872794948048220879472606028893438641950111676908938731566314364992830599869323089581972521537161008022830995328319325572699999899962324249407486185946662351299082540889' --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":"38366772073744290479205997655140433598776291510065819413453661297687280748761448362087898397904659782268040267729507702497726391340672862925428292323832640194870846331786040473368566586663068698194531755302054359812872794948048220879472606028893438641950111676908938731566314364992830599869323089581972521537161008022830995328319325572699999899962324249407486185946662351299082540889"},"decimal":false,"detail":2}}'