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Two numbers which are "relatively prime" have no common prime factors.

To illustrate, let's write several numbers in terms of their prime factors:

24 = 2 x 2 x 2 x 3
25 = 5 x 5
42 = 2 x 3 x 7
70 = 2 x 5 x 7

You can see that 24 and 25 are relatively prime, because they don't share any common prime factors. Likewise, 25 and 42 are relatively prime. 24 and 42, however, are NOT relatively prime because they share the common factors of 2 and 3. Likewise 25 and 70 are NOT relatively prime because they share the common factor 5.

When a fraction is in its simplest form, the numerator and denominator are relatively prime.
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Q: What are a pair of numbers that are relatively prime?
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Related questions

Are 72 and 252 relatively prime?

No, 72 and 252 are not relatively prime. No pair of even numbers can be relatively prime.


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No, they are not.


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A number is never relatively prime.Relatively prime refers to a pair of numbers.


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A pair of prime numbers are always relatively prime, whether they are consecutive or not. This is so because "relatively prime" means they have no common factors.


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26 and 99 is the only pair which is relatively prime.


What does it mean to have a pair of relatively prime numbers?

Numbers whose GCF is 1, like 24 and 49, are known as relatively prime. This means that they have no prime factors in common.


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relatively prime or co-prime.


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No, 28 and 34 are not relatively prime. No pair of even numbers can be relatively prime, as they always share at least one factor (2).


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A single number cannot be relatively prime. Any pair of numbers between 50 and 100 of which one is a prime will be relatively prime. There are 728 pairs of numbers that are relatively prime and I have neither the time nor patience to list them all!


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Numbers that are relatively prime, like 5 and 7 or 5 and 8.


What are related prime numbers?

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It is, and always is relatively prime.


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