Question

How to find the 100001 prime number in JavaScript

Answer 1

function isPrime(num) {
    if (num < 2) return false;
    
    for (let i = 2; i <= Math.sqrt(num); i++) {
        if (num % i === 0) return false;
    }
    
    return true;
}

let count = 0;
let number = 1;
const target = 100001;

while (count < target) {
    number++;
    if (isPrime(number)) {
        count++;
    }
}

console.log(`The 100,001st prime number is: ${number}`);

 
 
/*
run:
 
The 100,001st prime number is: 1299721
 
*/

 

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