Sieve

export function primes(num: number): number[] {

const numer: number[] = [];

for(let i=2; i<=num; i++){

if(Isprimes(i)){

  numer.push(i);

}

}

return numer;

}

​

function Isprimes(num: number):boolean {

if(num ==1) return true;

if(num == 2 || num == 3) return true;

if( num % 2== 0 || num % 3 == 0) return false;

let i = 5;

while(num >= i*i){

if( num % i == 0 || num % (i+2) == 0 ) return false;

i +=6;

}

return true;

}

​