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The numbers are: -5 and 3
111 = 3*37
Well, let's think about this like a happy little math problem. If we add 2 + 4 + 6, we get 12. Then if we multiply that by 3, we get 36. Finally, if we add 1 to that, we get 37. If we multiply 37 by 3 again, we get 111. By subtracting 23, we get 88. And there you have it, a beautiful solution with just two operational signs!
The three prime numbers which multiply to make 231 are 3 x 7 x 11.
There are 4 of them which are 2*3*3*3 = 54