function getPrimes(max) {
  let arr = new Array(max).fill(undefined);
  for (let i = 2; i < max; i++) {
    if (arr[i] === undefined) {
      arr[i] = true;
      for (let j = i + i; j < max; j += i) {
        arr[j] = false;
      }
    }
  }
  return arr
    .map((item, i) => item ? i : false)
    .filter(Boolean)
}

let primes = getPrimes(150000);
console.log(primes[10000]);

def is_prime(n):
    nums_to_check = range(2, int(n**.5) + 1)
    for i in nums_to_check:
        if n % i == 0:
            return False
    return True

def prime_at_index(idx):
    n_primes = 1
    n = 2
    while n_primes < idx:
        n+=1
        if is_prime(n):
            n_primes += 1
    return n

print(prime_at_index(10001))

const primes = [ 2, 3 ];
function isPrime(n) {
  return primes.every(d => n % d > 0);
}

let i = 1;
while (primes.length < 10001) {
  const n = i * 3 + 1.5 + .5 * (-1) ** (i + 1);
  if (isPrime(n)) primes.push(n);
  i++;
}
console.log(primes[10000]); 

function nthPrime(n) {
    let primes = [2];
    let higherDivisorLimit;
    let isPrime;
    for(let i = 3; primes.length < n; i+=2) {
      higherDivisorLimit = Math.sqrt(i) + 1;
      isPrime = true;
      for(let j = 0; primes[j] < higherDivisorLimit; j++) {
        if(i % primes[j] === 0) {
          isPrime = false;
          break;
        }
      }
      if(isPrime) primes.push(i);
    }
    return primes[primes.length - 1];
}

console.log(nthPrime(10001));

package main

import (
    "fmt"
    "math"
)

func primeEratosthenes(a []bool, n int) []bool {
    for i := 2; i < int(math.Sqrt(float64(n))); i++ {
        if a[i] {
            for j := i * i; j < n; j += i {
                a[j] = false
            }
        }
    }
    return a
}

func main() {
    a := make([]bool, n+1)
    for i := range a {
        a[i] = true
    }

    primes := primeEratosthenes(a, 100000)
    var pList []int

    for i, v := range primes {
        if v {
            pList = append(pList, i)
        }
    }
    pList = pList[2:]
    fmt.Println(pList[10000])
}

Set i 0
Set num 3
While (true)
  If (IsPrime(num))
    Set i `eval(i+1)`
    If (i == 1001 or i == 6)
      echo num 
  Set num `eval(num + 1)`

IsPrime.fn << curl stackoverflow.com/?q=Is%20Prime

fn main() {
    println!("{}", get_nth_prime(10001));
}

fn get_nth_prime(n: usize) -> u32 {
    (1..).into_iter().filter(|&num| is_prime(num)).nth(n - 1).unwrap_or_default()
}

fn is_prime(n: u32) -> bool {
    match n {
        1 => false,
        2 => true,
        n if n % 2 == 0 => false,
        _ => !(2..(n as f32).sqrt() as u32 + 1).any(|i| n % i == 0),
    }
}