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Q: Is 1155 a prime number composite number or neither?

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composite, all you do is look at the number at the end then find out if it is prime composite or neither.

1155 is a composite number because it has more than two factors.

Composite

1155 is obviously a multiple of 5 and a multiple of 11, so it is a composite number.

It is composite

1155 is not prime. 1155 = 3 * 5 * 7 * 11

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. 1155 is composite.

1155 is a composite number because it has more than two factors

1155 is composite.

composite

1155 ends with 5, which means it is divisible by 5. It is a composite number because it has factors in addition to 1 and itself.

It is composite.

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