factordbrpc · fdb
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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.

FF · Fully factored
id #1100000000696706789 38 digits

Value

6699209205…72<38>
term H(2,100)
Is factor of
Algebraic factorization 17 factors · partial

These factors follow from the form of the expression and divide this number; the remaining cofactor still needs numeric factoring.

V(1,2,0-1) Lucas V divisor (index 1) 1 dig
V(2,2,0-1) Lucas primitive part (index 4) 1 dig
U(4,2,0-1) Lucas U divisor (index 4) 2 dig
U(5,2,0-1) Lucas primitive part (index 5) 2 dig
41 Lucas primitive part (index 10) 2 dig
V(5,2,0-1) Lucas V divisor (index 5) 2 dig
1121 Lucas primitive part (index 20) 4 dig
U(10,2,0-1) Lucas U divisor (index 10) 4 dig
V(10,2,0-1) Lucas V divisor (index 10) 4 dig
U(20,2,0-1) Lucas U divisor (index 20) 8 dig
45232349 Lucas primitive part (index 25) 8 dig
45245801 Lucas primitive part (index 50) 8 dig
U(25,2,0-1) Lucas U divisor (index 25) 10 dig
V(25,2,0-1) Lucas V divisor (index 25) 10 dig
2046573771138401 Lucas primitive part (index 100) 16 dig
U(50,2,0-1) Lucas U divisor (index 50) 19 dig
V(50,2,0-1) Lucas V divisor (index 50) 20 dig
From the command linefdb · curl
fdb
fdb number 'H(2,100)' --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":"H(2,100)"},"decimal":false,"detail":2}}'