No.
First of all, every number is a factor - of its multiples.There is no general way to distinguish between prime and composite numbers. At one level, though, there are some simple ways. If the number is not 2, but ends in 0, 2, 4, 6 or 8 then it is a composite, If the number is not 5 but ends in 0 or 5 it is composite. If the number is not 3 but the sum of all the digits of a number is 3 or divisible by 3, then it is composite. There are moderately complicated divisibility rules for 7 and 11. But this method does not identify all composite numbers and there is no guaranteed method.
Eratosthenes' method of finding prime and composite number is called 'The Sieve of Eratosthene'.
If a number has more than two factors, it's composite.
There are different divisibility rules for different [potential] divisors.
To find a composite number, check if the number can be divided by 2,3,4,5, ect. If it can, it`s composite. If not, it`s prime.
prime numbers
618 is composite, because it is even. Also it is a multiple of 3 (from sum of digits method), so the answer is composite. Any number that ends with 0, 2, 4, 6, or 8 is a multiple of 2.
Ever J. Barbero has written: 'Finite element analysis of composite materials' -- subject(s): Mathematical models, Composite materials, Finite element method 'Introduction to Composite Materials Design'
yes
Alan E. McKim has written: 'Report on composite finite element' -- subject(s): Laminates, Composite materials, Finite element method
Eratosthenes
There are 94 of them so I guess you will have to work them out - best to use the sieve method.