import prompt from "prompt-sync";
const promptSync = prompt();

// Function to check if a number is prime
function isPrime(number) {
	if (number <= 1) {
		return false;
	}
	for (let i = 2; i <= Math.sqrt(number); i++) {
		if (number % i === 0) {
			return false;
		}
	}
	return true;
}

const number = Number(promptSync("Enter the number: "));

// Calculate and display the result
console.log(`Is ${number} prime? ${isPrime(number)}.`);