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A Prime number is any number that only has one and itself as factors. Therefore, any number that has more than two factors is not prime. Check the the factors of a number to tell if it is prime or not.

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Q: Which of these numbers is not a prime number?

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Any number that is not a prime number.. . .Prime numbers: 1,3,5 and 7

A number that is not a prime number is called a composite number because it can be made by multiplying prime numbers together. For example, 6 is a composite number that is the product of multiplying the prime numbers 2 and 3 together.

Prime factorization is writing a composite number as a product of prime numbers.

Numbers with only two factors, the number itself and one, are called prime numbers. Examples of prime numbers are 2 (which is the only even prime number) and 17.

A prime number is a number having exactly two factors, 1 and the number itself. All prime numbers except the number 2 are odd numbers.

Related questions

If the numbers are prime numbers, the prime factor of each number is the number itself. If the numbers are not prime numbers, the prime factors of each number are each of the prime numbers by which the number in question can be divided without a remainder.

Any number that is not a prime number.. . .Prime numbers: 1,3,5 and 7

All prime numbers are natural numbers. So yes, some natural numbers are prime numbers.

A prime number times a prime number is a composite number. Since prime numbers, except for 2, are odd numbers, a prime number times a prime number is usually an odd number. It will only be an even number if one of the prime numbers is 2. A prime number times a prime number will be a number with four factors unless both prime numbers are the same, in which case it will be a square number with only three factors.

The product of two prime numbers is always a composite number, and it never is a prime number.

It is impossible to know the number of prime numbers because there is an infinite number of them.

17 is a prime number. 8 and 12 are not prime numbers.

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