PLZ HAV A LOOK ON CODE AND TELL ME WHY I'M GETTING WRONG ANSWER

include<stdio.h>

int main() { int i, j, n, temp, flag, rem, rev;

scanf("%d", &n);
for (i = n + 1; i <= 1004000; i++)
{
    temp = i;
    rev = 0;
    while (temp != 0)
    {
        rem = temp % 10;
        rev = rev * 10 + rem;
        temp /= 10;

    }
    if (rev == i)
    { 
        flag = 0;

        for (j = 2; j < i / 2; j++)
            if (i%j == 0)
        {

            flag = 1;

            break;
        }
            if (flag == 0)
            {
                printf("%d\n", i);
                break;
            }

    }

}
return 0;

}