Thread: Writing long variables to file

The attach program works if I reduce the countLimit, but if it is above 10 trillion it gives me the following error: cannot find symbol
symbol : method write(long)
location: class java.io.FileOutputStream
output.write(number);

import java.io.*;
 
public class primenumbers {
 
    public static void main(String[] args) throws IOException {
        // Create an output stream to the file
        FileOutputStream output = new FileOutputStream("Exercise23_7.dat");
        long countLimit = 10000000000L;
        long count = 0;
        long number = 2;
        while (count <= countLimit) {
         // Assume the number is prime
         boolean isPrime = true;
         for (int divisor = 2; divisor <= number / 2; divisor++){
             if (number % divisor == 0){
             isPrime = false;
             break;
             }
         }
         if (isPrime){
            //write prime number to a file
             output.write(number);
             System.out.println(number);
         }
        number++;
        count++;
        }
     output.close();
     FileInputStream input = new FileInputStream("Exercise23_7.dat");
     int value;
     while((value = input.read()) != -1)
         System.out.print(value + " ");
 
     input.close();
    }