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No, 19 is prime. A composite number needs to have 3 or more factors. 19 has only 2 factors, 1 and itself, which makes it prime.

Q: Is 19 a composite number

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It is 19 which is a prime number

19 is the tenth odd number, And is not a composite number or even number.

Yes, 19 x 2.

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Composite (11 x 19).209 is a composite number. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.