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Any odd Prime number.

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Q: What numbers are 18 relatively prime to?
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Related questions

What numbers are relatively prime with 18?

All odd numbers that can not be divided by 3 evenly would be relatively prime with 18.


Is 18 and 105 relatively prime numbers?

No.


Are 18 and 34 relatively prime numbers?

No.


What two numbers are relatively prime with 25?

4, 18


Find 3 numbers whose GCF is 18?

You can multiply the number 18 by different numbers that are relatively prime, for example by different prime numbers.


What number is relatively prime to 18?

Lots of numbers are. To be relatively prime, they would have to have only the number 1 as a common factor. So any number that has any of 2, 3, 6, 9 or 18 as factors are not relative prime to 18. So numbers such as 5, 7, 11, 13 and 17 are relatively prime with 18.


Is 18 and 33 relatively prime?

No. Both 18 and 33 can be divided by 3, which means that they are not relatively prime.(TIP When someone asks you if the numbers are relatively prime think of a number that both numbers can be divided by to get a whole number. With that you should be able too see strait away which numbersare relatively prime.)(Relatively prime means any amount of numbers that can only be divided by 1 and themselves )Hope I helped! :) XD


Are any two prime numbers relatively prime?

Any two prime numbers will be relatively prime. Numbers are relatively prime if they do not have any prime factors in common. Prime numbers have only themselves as prime factors, so all prime numbers are relatively prime to the others.


Is 18 relatively prime?

Relatively Prime numbers are sets of two or more numbers having 1 as their greatest common factor (gcf). All even numbers have 2 as a common factor, so no even number is relatively prime with any other even number.


What is the greatest common factor of 18 and 49?

The GCF of 18 and 49 is 1. These numbers are relatively prime


What are related prime numbers?

You might be thinking of relatively prime numbers. Two numbers are considered relatively prime if their GCF is 1. 4 and 9 are relatively prime.


What pair of numbers between 200 and 300 has a gcf of 18?

To have a gcf of 18 they must have one factor of 18 in common and no other factor, ie the second factor of the numbers must be relatively prime. The multiples of 18 between 200 and 300 are: 12 x 18 = 216 13 x 18 = 234 14 x 18 = 252 15 x 18 = 270 16 x 18 = 288 12 is relatively prime to 13 13 is relatively prime to 14, 15 & 16 14 is relatively prime to 15 15 is relatively prime to 16 (Pairs of numbers are being considered, so as 12 is relatively prime to 13, 13 is also relatively prime to 12 and thus is only listed when the numbers increase, ie under 12 and not under 13.) Thus the pairs: 216 & 234 234 & 252 234 & 270 234 & 288 252 & 270 270 & 288 all have a gcf of 18.