it helps by improveing math skills.
You can use prime numbers to factorize numbers, a very useful tool.
A math teacher is the job that uses prime and composite numbers.
they help you know whick numbers are prime meaning its only factors are itself and one and which numbers have more factors than itself and 1.
prime and composite
prime numbers composite numbers multiples subtract
You can still do math if two numbers in a equation are not prime for example 4+9 can be solved even though they are not prime, but composite numbers.
The ratio of composite numbers 6,3,4,12,18 and 17 to prime numbers would be 9,15,21 and 25. This is taught in math.
A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.
Among other things, a knowledge about prime numbers and factoring can help you in finding least common multiples and greatest common factors.
It is a composite number.