Nobody made them. They are a property of some integers.
Prime numbers.
No composite numbers are prime. A composite number is a number that can be made by multiplying other numbers. A prime number is made only by one and itself. Therefore no number can be both prime and composite
A number that is not a prime number is called a composite number because it can be made by multiplying prime numbers together. For example, 6 is a composite number that is the product of multiplying the prime numbers 2 and 3 together.
Integers greater than 1, that are not prime numbers, are called composite numbers, because they are "made up of" more than one prime factor.
All prime numbers are numbers that can only be factored by 1 and themselves (i.e. 5 is only divisible by 1 and 5). If you divide something by zero, you get "undefined" so your answer is,"There are no prime numbers made of 1 and 0"
Any number can be made up from those numbers.
24 of them.
They are the building blocks or all the numbers. Composite numbers are made of primes.
Prime numbers cannot be made up from multiplying other numbers. Primary colours cannot be made up from adding other colours.
15 is made of the two prime factors, 3 and 5.
It is 2310.
No because 2 is an even number which is also a prime number