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 '477240165161887258474392637323297632982219876921140098957211163401482630030955365133894958561620127762866450533830106052484195782798801288842374132418859417550358919664037450619960306902939062055549859600508308888780505788459441611456050370502115882180563010692819498867734552492101305811807050034623' --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":"477240165161887258474392637323297632982219876921140098957211163401482630030955365133894958561620127762866450533830106052484195782798801288842374132418859417550358919664037450619960306902939062055549859600508308888780505788459441611456050370502115882180563010692819498867734552492101305811807050034623"},"decimal":false,"detail":2}}'