def is_prime(n):
  """Checks if a number is prime."""
  if n <= 1:
    return False
  for i in range(2, int(n**0.5) + 1):
    if n % i == 0:
      return False
  return True

sum_of_primes = 0
primes = []
for i in range(2, 1000):
  if is_prime(i):
    sum_of_primes += i
    primes.append(i)

print(f"The sum of prime numbers under 1000 is: {sum_of_primes}")
print(f"The 10th prime number under 1000 is: {primes[9]}")