Answer:
37
Step-by-step explanation:
37 can only be multiplied by 1 and 37. Because prime numbers cannot be multiplied by any whole number except 1 and itself, the answer must be 37.
37 can only be divided by 37 and 1, nothing else.
38 is divisible by 2 and 19.
39 is divisible by 3 and 13.
