89 and 97
The numbers 79 and 83 are prime.
Numbers can't have prime numbers, some numbers are prime numbers. Prime numbers are numbers that have no factors other than 1 and itself. 85 is not a prime number because its factors are 1, 5, 17, and 85.
All of them except for 89 which is a prime number
As a product of its prime factors: 5*17 = 85
They are: 83+2 = 85
5 x 17 = 85
No.
It is 31 because it has only two factors which are itself and one
As a product of its prime factors: 5*17 = 85
They are: 83+2 = 85
85