Fundamental Theorem of Arithmetic
Theorem
Every number can be expressed as product of primes and this factorisation is unique, apart from the order in which the prime factors occur.
Example
45 is a composite number.
It is expressed as:
\(45 = 3 \times 3 \times 5\)
Note
Every number in maths can either be a prime or a composite number except 0 and 1 because 0 and 1 are neither a prime number nor a composite number.
