Any multiple of 3 will not be relatively prime to 9 because they will both have 3 as a common factor. Some of these numbers are 3, 6, 12, 39, 102, and 372.
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The prime factors of 4 are 2 and 2. The prime factors of 9 are 3 and 3. They do not have any prime factors in common, so they are relatively prime.
27 is not a prime number and i dont know about 117 but i dont think its a composite # * * * * * The person who gave the above answer has no understanding of "relative primes". Or primes, for that matter. Neither 8 nor 9 is a prime BUT 8 and 9 are relatively prime (or co-prime) because they have no factor in common. That is what relatively prime means. 117 is not a prime, even if the previous answerer thinks otherwise. 27 and 117 are not relatively prime because both are divisible by 3.
No, 100 and 202 are not relatively prime. Relatively prime numbers only have the number 1 as a common factor. The number 1 is a common factor for them, but the number 2 is another common factor that they have, so they are not relatively prime.
209 is relatively prime (as is 211).
A number cannot be "relatively prime" except in relation to another number. For example, 8 and 15 are relatively primebecause they contain no prime factors in common.