The factors of 72 are 1, 2, 3, 4, 6, 8, 9, 18, 24, 36, and 72.
The composite number factors are 4, 6, 8, 9, 18, 24, 36, and 72.
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Not all composite numbers are even, but all even numbers except 2 are composite.
1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72
The composite numbers between 70 and 80 are 72, 74, 75, 76, 77 and 78.
For instance, all the even numbers greater than 70 are composite.The next few composite numbers greater than 70 are: 72, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85, ...
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.