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 '61569520016539845272797767038011559340235185526783399918054819952541450162577621729256647655532622284304979451987269720485584057263950114567233463268697909920694090158569706973003779000632124158356425146111134309417791160024917906259311799550317011023676719289135768395625334108143917049917813939890914490753216336724257312823615416648653135172387164048767294381756950352920211676281778980698107512546314109782675690674319638712173658224001218358332958025913084495263150134750263118238933404095848279063450928100778644728528187975354117134127351554564103618012915202238868845601550142603531653399906670900111558295843365955745012391520089326619113086497' --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":"61569520016539845272797767038011559340235185526783399918054819952541450162577621729256647655532622284304979451987269720485584057263950114567233463268697909920694090158569706973003779000632124158356425146111134309417791160024917906259311799550317011023676719289135768395625334108143917049917813939890914490753216336724257312823615416648653135172387164048767294381756950352920211676281778980698107512546314109782675690674319638712173658224001218358332958025913084495263150134750263118238933404095848279063450928100778644728528187975354117134127351554564103618012915202238868845601550142603531653399906670900111558295843365955745012391520089326619113086497"},"decimal":false,"detail":2}}'