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A factor tree is one way of notating the process of finding the prime factorization of a given number.

210

105,2

35,3,2

7,5,3,2

2 x 3 x 5 x 7 = 210

Q: How can a factor tree help find the prime factors of a number?

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it means to find out if the number is composite or prime

Find the prime factorization. Identify the distinct prime factors. Add them up.

Find the prime factors for 99. Any other prime number is not a prime factor. There are an infinite number of answers, since the set of prime numbers if infinite.

All numbers that only have one and itself as factors are prime. Therefore, to tell if a number is prime simply find it's factors. If it has more than two factors than it is not a prime number.

You do not. To have a greatest common factor, you need two or more numbers. A common factor is a factor that two or more number have in common. However, the prime factorization of all the numbers will help you find the greatest common factor. The greatest common factor will be the prime factors they have in common multiplied together. Example: The prime factors of 45 are 3, 3, and 5. The prime factors of 60 are 2, 2, 3, and 5. The common prime factors are 3 and 5, so the greatest common factor is 3 x 5 = 15.

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3 could be a prime factor but it depends on which number you're trying to find the prime factors of.

it means to find out if the number is composite or prime

73 is a prime number. A prime number has only two factors, one and the number itself.

13 is a prime number. A prime number only has two factors: one and itself.

Find the prime factorization. Identify the distinct prime factors. Add them up.

Factor 756 into prime factors. Then add additional prime factors, such that each prime factor occurs a number of times that is a multiple of 3. The product of the additional prime factors is "k".

Find the prime factors for 99. Any other prime number is not a prime factor. There are an infinite number of answers, since the set of prime numbers if infinite.

To find the prime factors of a number, start with any factor pair for the number and keep factoring until all factors are prime. 26 2 x 13 Both factors are prime, so 2 and 13 are the prime factors of 26.

Start looking for factors; you already know that 1 is a factor, and that the number itself is a second factor (unless the number is 1). As soon as you find a factor that is neither 1 nor the number itself, the number is composite. If you find exactly two factors, the number is prime. If the number has only one factor, the number is 1, which is neither prime nor composite.

Factor it. If it has only two factors, it's prime. If it has more than two, it's composite.

All composite numbers can be expressed as unique products of prime numbers. This is accomplished by dividing the original number and its factors by prime numbers until all the factors are prime. A factor tree can help you visualize this. Example: 210 210 Divide by two. 105,2 Divide by three. 35,3,2 Divide by five. 7,5,3,2 Stop. All the factors are prime. 2 x 3 x 5 x 7 = 210 That's the prime factorization of 210. The largest of those numbers is the largest prime factor.

Every prime number has exactly two factors. One of the factors is ' 1 '.The other factor is the number itself. If the number has any more factors,then it's not a prime number.If someone gives you a number, guarantees that it's definitely a prime number,and asks you to find the factors, you know the answer immediately. There aretwo factors. One of the factors is ' 1 ', the other factor is the number itself, andthere are no more factors.