The answer for x should be X= -9
I would say D my dear friend from what i see from the patterns hope it helps :) and sorry if its wrong i tried lol
113 is one number. 131 is another
137, 173
I think that's all of them.
You can check if you google 'list of primes'.
Hold on i'm not sure about 113 and 131 Is number 1 a prime number? I dont think it is , So that leaves us with only 137 and 173.
