FF · Fully factored
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
Algebraic factorization 8 factors · complete
These factors follow from the form of the expression and multiply to exactly this number.
(10^12+10^11+5*10^9+2*10^8+7*10^6+2*10^5+5*10^3+10^2+1)/(10^4+10^4+5*10^3+2*10^3+7*10^2+2*10^2+5*10+10+1)
Aurifeuillian M of Φ₆₀ 8 dig
(10^12-10^11+5*10^9-2*10^8+7*10^6-2*10^5+5*10^3-10^2+1)/(10^4-10^4+5*10^3-2*10^3+7*10^2-2*10^2+5*10-10+1)
Aurifeuillian L of Φ₆₀ 9 dig
From the command linefdb · curl
fdb
fdb number id:1100000000163812756 --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":{"id":1100000000163812756},"decimal":false,"detail":2}}'