public void IsPrime() { Assert.IsTrue(NumericUtilities.IsPrime(2)); Assert.IsTrue(NumericUtilities.IsPrime(31)); Assert.IsTrue(NumericUtilities.IsPrime(17)); Assert.IsFalse(NumericUtilities.IsPrime(4)); Assert.IsFalse(NumericUtilities.IsPrime(1)); Assert.IsFalse(NumericUtilities.IsPrime(55)); }