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 '31990800176320707475624725494204273758645778874635471575566639032433969691695188337194000804914716495243113991562359399487688460930677344906796210003511576361418005537741688331963873506278075492147573592969479039204651105988687656425529987762656354485487918877351186074172934588468127348005047917087665855142952262197652855595469895140070646688170875197994351854127952972651549006625854206303035718399093379236448990914524111158492026867233' --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":"31990800176320707475624725494204273758645778874635471575566639032433969691695188337194000804914716495243113991562359399487688460930677344906796210003511576361418005537741688331963873506278075492147573592969479039204651105988687656425529987762656354485487918877351186074172934588468127348005047917087665855142952262197652855595469895140070646688170875197994351854127952972651549006625854206303035718399093379236448990914524111158492026867233"},"decimal":false,"detail":2}}'