Answer No : 24 : 
def isPrime(n):
    if (n == 1 or n == 0):
        return False

    for i in range(2, n):
        if (n % i == 0):
            return False
    return True


N = 100;

for i in range(1, N + 1):
     if (isPrime(i)):
        print(i, end=" ")
Output:
2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89 97