/*

 * primos.h

 * Flariut~

 */

/*

 * name: EsPrimo

 * @param (unsigned long long)

 * @return (bool)(true == es primo) 

 */

bool EsPrimo(unsigned long long n){

	const unsigned int primes55[] = {2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,

	73,79,83,89,97,101,103,107,109,113,127,131,137,139,149,151,157,163,167,173,179,

	181,191,193,197,199,211,223,227,229,233,239,241,251,257};

	for(unsigned int i=0;i<55;i++){

		if(!(n%primes55[i])){

			if(n == primes55[i])

				return true;

			else

				return false;

		}

	}

	unsigned long maxtest = (unsigned long)sqrt(n);

	for(unsigned int i=259; i<maxtest; i+=2){

		if(!(n%i))

			return false;

	}

	return true;

}