Any even number - except 2 - is composite.
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30 is composite.
Factors can be prime or composite. The factors of 30 are 1,2,3,5,6,10,15 and 30. Of these, 3 and 5 are prime. The rest are composite except for 1, which is neither.
20, 21, 22, 24, 25, 26, 27, 28, 30 are composite.
Oh honey, the number 30 is as composite as a Kardashian selfie. It's made up of more factors than a soap opera plot. So yeah, it's definitely not a prime number.
The next four composite numbers after 30 are 32, 33, 34 and 35.