What looks like HFm but isn't?
I'm trying to think of something that appears similar to HFm at first glance, but upon closer inspection, it's actually not the same. It might share some characteristics or have a resembling appearance, but ultimately, it's distinct from HFm. What could this be?
Why isn t 2001 a prime number?
Why isn't 2001 considered a prime number? Isn't it supposed to be a number that's only divisible by 1 and itself? What makes it different from other prime numbers like 2, 3, 5, or 7? Is there a specific rule or criteria that 2001 doesn't meet? Can you explain the mathematical reasoning behind why 2001 is not a prime number in a clear and concise manner?