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 '16963327890749362994320717109859989999339173358529819342305395151412858036634748574532903005070808236330193056869906034366834699425671660051855546338716802501355539381534648641605691741764582947889908514310749786913431331472836426818615191996184120187965912761761135448715562398931046947037922660724406760947873854389993677456274136431562692899714384268706799370676791616076613' --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":"16963327890749362994320717109859989999339173358529819342305395151412858036634748574532903005070808236330193056869906034366834699425671660051855546338716802501355539381534648641605691741764582947889908514310749786913431331472836426818615191996184120187965912761761135448715562398931046947037922660724406760947873854389993677456274136431562692899714384268706799370676791616076613"},"decimal":false,"detail":2}}'