Prime numbers are integers. They won't equal a decimal.
Well, two prime numbers added together to equal six are 3 and 3, and 5 and 1. Two prime numbers multiplied together to equal six are 3 and 2.
The prime numbers (factors) of 225 are: 3 and 5
The prime numbers (factors) of 108 are: 2 and 3
The prime numbers (factors) of 405 are: 3 and 5
No prime numbers can be equal to 33, as 33 is not a prime number. It is divisible by 3. Prime numbers are only divisible by 1 and themselves, and 33 does not meet this criterion.
The product of the prime numbers 3 and 5 is 15.
17 and 3 are prime numbers with a difference of 14.
dos and tres 2 & 3 are prime numbers
It is not clear whether you want to add the prime numbers, multiply them, or what.
The prime factors of 288 are: 2, 3
55 does not have 3 prime factors.