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No, 1 is not a Prime number.
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Are 15 and 37 co-prime?
15 and 37 are co-prime because they have no common factor greater than 1.
What is a prime number that is a factor of 15?
1, 3, 5 are all prime factors of 15 3 and 5 only. 1 is a special number that has no factors but itself yet it is not counted as a prime number.
Is 15 a prime number of 45?
15 is a factor of 45, but it is not a prime number.
What are the common factors of 7 and 15?
Because 7 is prime, the highest, lowest and only common factor of 15 and 7 is 1 (one).
When are two composite numbers relatively prime?
Numbers called relatively prime have no common factors other than 1. All even numbers have 2 as a common factor, so no even number is relatively prime with any other even number. As an example, the factors of 14 are 1, 2, 7, and 14, and the factors of 15 are 1, 3, 5, and 15. 14 and 15 are relatively prime because the only factor they have in common is 1.
