public void OneIsNotPrime()
        {
            var result = PrimeNumber.Check(1);

            Assert.False(result);
        }
        public void LargeIsNotPrime()
        {
            var result = PrimeNumber.Check(1373653);

            Assert.False(result);
        }
        public void LargeIsPrime()
        {
            var result = PrimeNumber.Check(10006721);

            Assert.True(result);
        }
        public void MediumIsPrime()
        {
            var result = PrimeNumber.Check(7919);

            Assert.True(result);
        }
        public void ThirteenIsPrime()
        {
            var result = PrimeNumber.Check(13);

            Assert.True(result);
        }
        public void EightIsNotPrime()
        {
            var result = PrimeNumber.Check(8);

            Assert.False(result);
        }
        public void ZeroIsNotPrime()
        {
            var result = PrimeNumber.Check(0);

            Assert.False(result);
        }
        public void NegativeIsNotPrime()
        {
            var result = PrimeNumber.Check(-1);

            Assert.False(result);
        }