1 and 211. 211 is prime.
-211
Two numbers that multiply to give -1 are -1 and 1.
45
736
12x12
-211
Two numbers that multiply to give -1 are -1 and 1.
45
The numbers are: 20 and -48
736
-82
12x12
-144
-17
69
Two: 1 and 211.
211 is the only of the given numbers that is prime.