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 '1222575264300469411509528671958620624107918351106628072500225648518702640479602453234392030915325193635775135696133025136756847830390004292246360897059806378143441765172169621113402207520634243815521362466701308219505242092730553103732468230956994287959208519659854140908782741331549578534757' --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":"1222575264300469411509528671958620624107918351106628072500225648518702640479602453234392030915325193635775135696133025136756847830390004292246360897059806378143441765172169621113402207520634243815521362466701308219505242092730553103732468230956994287959208519659854140908782741331549578534757"},"decimal":false,"detail":2}}'