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No Prime number greater than 2 has 2 as a factor. A prime number has only two factors, 1 and the number itself. All prime numbers have 1 as a common factor. Numbers with any number besides 1 as common factors are composite numbers.

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Q: Two prime numbers greater than 2 have 2 as a common factor?

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When the numbers have a common factor (other than 1).

39 and 45 are not relatively prime because they have 3 as a common factor. Relatively prime numbers have no common factor greater than 1.

All prime numbers have a common factor of 1.

When they have a common prime factor. When their GCF is greater than 1.

All numbers have factors. Some factors are prime numbers. A prime factor is a factor that is a prime number. A common prime factor is a prime factor that appears on the list of factors of two or more given numbers.

When their GCF is greater than 1. When they have a prime factor in common.

If the HCF (Highest Common Factor) of two numbers is 1, then the two numbers are relatively prime and their LCM is the product of the two numbers.

When the GCF is greater than 1. When they have a prime factor in common.

Co-prime numbers have a common factor of 1.

It is 3 that is a common prime factor to both numbers

All numbers have factors. Some numbers have some of the same factors as other numbers. These are common factors. If the factor is a prime number, it is a common prime factor. 3 is a prime number. 3 is a factor of 9. 3 is a factor of 12. 3 is a common prime factor of 9 and 12.

The numbers are relatively prime, or co-prime.

The greatest common factor of two or more prime numbers is 1.

2 is a prime number. Two or more numbers are said to be "relatively prime" if they have no common factor greater than 1.

Prime numbers and numbers that are relatively prime.

You need to check whether they have a common factor. You can simply factor each of the numbers; for numbers that are much larger, using Euclid's algorithm is much faster.If the common factor of two numbers is greater than 1, then they are NOT relatively prime.

All numbers have factors. Some factors are prime numbers. These are known as prime factors. Some numbers have some of the same prime factors as other numbers. These are known as common prime factors. 3 is a common prime factor of 12 and 15.

The greatest common factor of two different prime numbers is 1. The two prime numbers have as their factors, 1 and themselves. That means that 1 is the only factor they have in common.The GCF is 1.

If the greatest common factor is 1, then the numbers are said to be co-prime or relatively prime.

A set of numbers is coprime if their highest common factor is 1: that is, they have no larger factor in common. The numbers, themselves, need not be prime.For example 8 (=2*2*2) and 15 (=3*5) are coprime.

Because both numbers are prime numbers, the only common factor they have is 1. Therefore, the greatest common factor is 1. Another way to determine the greatest common factor is to find all the factors of the numbers and compare them. The factors of 5 are 1 and 5. The factors of 23 are 1 and 23. The only common factor is 1. Therefore, the greatest common factor is 1, which means the numbers are relatively prime. The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together. The prime factor of 5 is 5. The prime factor of 23 is 23. There are no prime factors in common, so the numbers are relatively prime, which means the greatest common factor is 1.

All numbers have a common factor, even if it's only 1. Numbers whose greatest common factor is 1 are said to be relatively prime or co-prime.

One

A prime number

You can not factor prime numbers, that is why they are prime numbers