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Q: How can you determine if a number is prime or composite or neither by looking at its factors of the number?

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By looking at its factor patterns.

Prime numbers have two factors; composite numbers have more than two factors. 1 and 0 are neither.

Prime numbers have two factors. Composite have more than two. Neither (one and zero) have less than two.

All natural numbers (counting numbers) greater than one are either prime or composite. If divisible by only one and the number itself, it is prime; if divisible by other natural numbers, then is composite. One is the only natural number that is neither prime nor composite.

composite, because its factors are 1,3,17,51............

A prime number has two factors. A composite number has more than two factors.Since 0 has no factors, it is neither prime nor 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.

Start looking for factors; you already know that 1 is a factor, and that the number itself is a second factor (unless the number is 1). As soon as you find a factor that is neither 1 nor the number itself, the number is composite. If you find exactly two factors, the number is prime. If the number has only one factor, the number is 1, which is neither prime nor composite.

It is composite because it has more than two factors

composite; 2 and 4 are its factors

Composite. Its prime factors are 2×2×7.

Factors: 1, 2, 4 2 is prime, 4 is composite, 1 is neither.

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