3 x 5 = 15
5 x 7 = 35
1, 3, 5, 15
1, 5, 7, 35
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No prime power exists since there are no duplicate prime numbers in the prime factorization.
Prime Factorization of 9 and 15The prime factorization of 9 is:3 X 3The prime factorization of 15 is:3 X 5
The prime factorization of 15 is 3 x 5.
If you look at the related question, "What are the prime factors of the numbers from 1 to 200?" (provided in the link below), take the prime numbers, and show them with multiplication signs between them, then you will have the prime factorization. Examples: The prime factors of 15 are 3 and 5. Therefore, the prime factorization is 3 x 5. The prime factors of 42 are 2, 3, and 7. Therefore, the prime factorization is 2 x 3 x 7. The prime factors of 64 are 2, 2, 2, 2, 2, and 2. Therefore, the prime factorization is 2 x 2 x 2 x 2 x 2 x 2. If you want the prime factorization of a specific number, it is sometimes listed under questions of the form, "What are the prime factors of __?" or "What are the factors of __?" or "What are the factors and prime factors of __?"
15 is a composite number because it has factors other than 1 and itself. It is not a prime number. The 4 factors of 15 are 1, 3, 5, and 15. The factor pairs of 15 are 1 x 15 and 3 x 5. The proper factors of 15 are 1, 3, and 5 or, if the definition you are using excludes 1, they are 3 and 5. The prime factors of 15 are 3 and 5. The 2 distinct prime factors (listing each prime factor only once) of 15 are also 3 and 5. The prime factorization of 15 is 3 x 5. NOTE: There cannot be common factors, a greatest common factor, or a least common multiple because "common" refers to factors or multiples that two or more numbers have in common.)