There are several combinations of prime numbers that could have a sum of 84:
How about: 37+47 = 84
If two prime number have a sum of 54 they cannot have a sum of 84, and conversely.
79 and 5
11 and 73.
Two prime numbers can have only one sum, not three different sums!
41 and 43
No prime numbers equal 84. The only number equal to 84 is 84,and it isn't a prime number.The prime factors of 84 are: 1, 2, 2, 3, and 7
The prime factors of 84 are 2x2x3x7.
56 and 84 are both composite numbers, so neither are prime and they are not relatively prime either as they share several factors.
8 and 4, added together and multiplied by 7
The prime factors of 84 are 2, 2, 3, and 7.
84 and 91 are composite numbers 67 and 73 are prime numbers