private void btnMenorMil_Click(object sender, EventArgs e)
{
primes = new Eratosthenes(1000);
primes.fill();
primes.findPrimes();
txtPrimes.Text = primes.getPrimes();
}
private void btnfindPrimes_Click(object sender, EventArgs e)
{
primes = new Eratosthenes(Convert.ToInt32(txtLimit.Text));
primes.fill();
primes.findPrimes();
txtPrimes.Text = primes.getPrimes();
}