144 is not prime. 144 = 2 * 2 * 2 * 2 * 3 * 3
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No a prime number can only be divided by 1 and itself. 144 is an even number, all even number can be divided by 2 (144/2=72) so no even numbers can be prime numbers.
It is a composite number because it has more than two factors
It is: 1
One.One.
Looking at 144, you can quickly see that it is an even number and all even numbers are divided by 2. Since prime numbers only have two factors (1 and the number itself), 144 has to be a composite number.