protected static boolean isPrimeSqrt(long number) {
		
		if (number == 1) {
			return false;
		}
		
		if (isEven(number)) {
			return (number == 2) ? true : false;
		}
		
		if ((number % 3) == 0) {
			return (number == 3) ? true : false;
		}
		
		if ((number % 5) == 0) {
			return (number == 5) ? true : false;
		}
		
		int numSqrt = (int) Math.sqrt(number);
		
		for (long i = 7; i <= (numSqrt); i+=2) {
			if ((number % i) == 0 ) {
				return false;
			}
		}
		return true;
	}