Algodoo

In fact, all composite numbers should be included because, in addition to 1 and themselves, they have at least one pair of factors. For example, 26 can be broken down into 2 and 13.

I said in the in the description.
"it has to be 6 factors or more"

But this is the definition of a 'true composite number' (that is, a super-rectangle), and in this case, some square numbers like 16 (the square of a semi-prime) would also be missed, because one pair of its three factor pairs consists of two identical factors.

※ A semi-prime is a composite number that has only one pair of factors besides 1 and itself, and both of these factors are prime numbers. The square of any prime number is a semi-prime.
※ For any positive integer x, we denote the number of its divisors as g(x). For example, g(1) = 1 and g(6) = 4. If a positive integer x satisfies g(x) > g(i) for all 0 < i < x, then x is called an anti-prime. For instance, the integers 1, 2, 4, 6, etc., are all anti-primes.
※ “Anti-prime” also has a completely different definition (which should technically be called “emirP”): if a prime number remains a prime when its digits are reversed, it is considered a reverse prime. For example, 11 and 13 are both reverse primes, but 101 is not, because palindromic primes(or primemirps) are not included in the category of reverse primes.

That is to complex for me to understand. And who says et cetera anymore?