All of the prime numbers (except 2) are odd. The sum of any two prime numbers (except 2) will be even. Unless 245 is a prime number (it isn't) your question does not have a solution.
2, 3, and 5 are the prime numbers that go into 30.
The prime factorization of 245 is 5^1 * 7^2.
The prime numbers (factors) of 18 are: 2 and 3
The prime numbers (factors) of 54 are: 2 and 3
The prime numbers (factors) of 50 are: 2 and 5
The prime numbers (factors) of 40 are: 2 and 5
The prime factorization of 56 is 2, 2, 2, and 7, so there there are two prime numbers, 2 and 7, that can evenly go into 56.
The prime factors are 2 and 13.
2 and 3
They are 2 and 3
The prime factorization for 245 is 7^2 x 5