Lucas Number Checker
Check whether a nonnegative safe integer equals a Lucas number L(0)=2, L(1)=1, ...
Description
Check whether a nonnegative safe integer equals a Lucas number L(0)=2, L(1)=1, ...
Check whether a nonnegative safe integer equals a Lucas number L(0)=2, L(1)=1, ...
When to use Lucas Number Checker
Use this tool to test or transform exact integers according to the named number-theory definition, for education, validation, or algorithm checks.
- Integer
- An integer input greater than or equal to 0.
How the calculation works
The formula below determines the tool output. Is a Lucas number: Whether is a lucas number is true.1
L₀ = 2, L₁ = 1, and Lₙ = Lₙ₋₁ + Lₙ₋₂ Limitations and assumptions
This tool applies an exact integer definition within JavaScript's safe-integer range. It is not an arbitrary-precision factorization or proof system, so do not use rounded measurements or integers beyond the accepted domain as though they were exact.
Alternative or Complementary approaches
Complement a number-property result with its factorization, divisors, digit representation, or a second independent predicate. A true result establishes only the named property and does not imply other properties such as primality.
References
-
Lucas number — Wikipedia contributors
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