No, any even number is divisible by 2, other than 2 itself. Prime means that it is divisible by only that number and 1.
162 is divisible by 2. The answer to 162/2 is 81, which is divisible by 9.
The prime factorization of 162 is: 2x3x3x3x3 (also known as: 2x34)
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