Hello there! I am a math gimmick blog that detects prime numbers. What is a prime number? Glad you asked! But first, a quick introduction. You may call me Prime, and mod uses she/her pronouns but will otherwise remain anonymous (if you can guess, congratulations! no prize other than pride).
A prime number is a number that cannot be divided further. 10 = 2x5, so 10 is not prime, but 2 and 5 are.
A composite number is a number that can be divided further. 10 in the above example is composite.
A small prime number is one that is smaller than any composite number. These such numbers are 2 and 3, which are smaller than 4. Will leave as an exercise to the reader to show that 4 is composite. These numbers are only prime because they have no choice, to do some anthropomorphizing. In my opinion, 5 is the first interesting prime.
As a final note, the number 1 is neither prime nor composite. The simplest explanation to this is because the fundamental theorem of arithmetic basically says every number has a unique prime factorization. So 6 = 2x3, and no other combination of primes. If we include 1 as a prime than we could say 6 = 1x2x3, or 1x1x2x3, and this quickly breaks uniqueness. There are several other things that we would need to say "all primes except 1" so we decide to just throw it out into it's own special category, called a unit.
Blog info below the cut!
