45 factored into prime numbers is:
5 x 9
5 x 3 x 3
composite
28 = 2x2x7
composite
22 x 5
All composite numbers can be expressed as unique products of prime numbers. This is known as a prime factorization.
No. 9 can be factored into 3 and 3, and 33 can be factored into 3 and 11.
They both are not prime numbers
Because any number with any proper factors is by definition not prime.
3 is one of the prime numbers of 45.
73 is a prime number, but 45 is not a prime number.
It is: 3*3*3 = 27
2269 is a prime number so, it can't be further factored into prime numbers. Prime factorization of 2269 = 2269.