Problem 10 of Find the sum of all the primes below two million.

The sum of the primes below 10 is 2 + 3 + 5 + 7 = 17.

Find the sum of all the primes below two million.

public class BigPrime {
	public static void main(String args[]){
		long j=0;
		for(long i=2;i<2000000;i++){
			if(isPrime(i)){
				j+=i;
			}
		}
		System.out.println(j);
	}
	
	public static boolean isPrime(long n){
	    for(int i = 2; i * i <= n; i++){
	  if(n % i == 0)
	   return false;
	  }
	    return true;
	}
}

Answer:
142913828922

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