Lucky Number

Build a small React component that takes a number as input and determines if it is a Lucky Number.

A number is Lucky if the sum of its digits is a prime number. Lucky numbers are often used in games, fun quizzes, or small number-based challenges.

Things to do

• Create an input where the user can type a number.
• Implement a function to check if a number is prime.
• Implement a function to check if the sum of the digits of the number is prime.
• Display the result below the input:
• "Lucky Number" if the sum is prime.
• "Not a Lucky Number" if the sum is not prime.
• Empty string if the input is blank.

ClassNames

• Use this classnames in your code
• Input -> input-box
• Result -> result

Examples

input: "23"
output: "Lucky Number"
// 2 + 3 = 5 → prime

input: "222"
output: "Not a Lucky Number"
// 2 + 2 + 2 = 6 → not prime

input: ""
output: ""
// Empty input

Testing Instructions

• Please use the following data-testid attributes in your React component:
• input-box → for the input field
• result → for displaying the lucky number result