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First of all, every number is a factor - of its multiples.

There is no general way to distinguish between prime and composite numbers. At one level, though, there are some simple ways. If the number is not 2, but ends in 0, 2, 4, 6 or 8 then it is a composite, If the number is not 5 but ends in 0 or 5 it is composite. If the number is not 3 but the sum of all the digits of a number is 3 or divisible by 3, then it is composite. There are moderately complicated divisibility rules for 7 and 11. But this method does not identify all composite numbers and there is no guaranteed method.

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Q: How do you notice that it is factors or prime or composite numbers?

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Some factors are prime numbers, some are composite.

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.

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89 is a prime number. Prime numbers only have 2 factors. Composite numbers have over 2 factors.

Prime numbers have two factors, composite numbers have more than two.

Prime numbers have two factors, composite numbers have more than two.

Prime numbers have two factors, composite numbers have more than two.

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Type your answer here... well.. prime numbers and composite numbers are the opposite. prime number has 2 factors (1 and itself ) and a composite has more than 2 factors.

Prime numbers have only 2 factors while composite numbers have more than 2 factors

composite has more than 2 factors and prime has 2 factors

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