0
1
4
9
16
25
36
49
64
81
100
121
144
169
196
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Prime numbers are 151, 157, 163, 167, 173, 179,181,191,193,197,199,
42, 84, 126, 168
42, 84, 126, 168
Testing the largest whole number less than 200, 199, we find that it is not evenly divisible by 2, 3, 5, 7, 11 or 13. Since the square root of 199 is between 14 and 15, there's no need to test any prime numbers higher than 14. Therefore, the answer is 198, since it is an even number, and all even numbers are composite numbers because they are divisible by 2. A composite number is the opposite of a prime number.
196, 169, 144