const getPrimeNumber = (chang: number) => {
let num = 0;
for (let i = 2; i <= chang; i++) {
if (i === 2 || i === 3 || i === 5 || i === 7) {
num++;
} else if (i % 2 !== 0 && i % 3 !== 0 && i % 5 !== 0 && i % 7 !== 0) {
num++;
}
}
return num;
};
console.log(getPrimeNumber(100));