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.
Numbers below 300 digits are proved directly by the background prover - this one will be marked proven prime automatically, usually within moments. Reload to check.
From the command linefdb · curl
fdb
fdb number '2665898709771700379581476893509763269393538480321581589051174909005375974614712067903407810556233238750400035093421592735286126879221361320829988752881964029186447838283619677653568107284899881079508944441609545508953421368621744377939187866968387838373615573894881676460856112057771' --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":"2665898709771700379581476893509763269393538480321581589051174909005375974614712067903407810556233238750400035093421592735286126879221361320829988752881964029186447838283619677653568107284899881079508944441609545508953421368621744377939187866968387838373615573894881676460856112057771"},"decimal":false,"detail":2}}'