Math Problem Statement
Prime factorization is finding which prime numbers multiply together to make the number that was being asked about. Recall that a prime number is any number in which the it's only factor is itself multiplied by 1. For example, 41 is a prime number because the only factors are 1 and 41.
To find the prime factorization of 45, we can list out what multiplies to give 45. For example, 45 space equals space 9 space cross times space 5. However, 9 is not prime since 3 cross times 3 equals 9. So, we can further write 45 as 45 equals 3 cross times 3 cross times 5. This is now the prime factorization for 45.
To complete this problem, please write each number that will appear in the prime factorization of 120 from least to greatest.
120 = * * * *
Solution
To find the prime factorization of 120, let's break it down step-by-step:
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Start with 120. Find its smallest prime factor:
- 120 is even, so divide by 2:
- 120 is even, so divide by 2:
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Now, find the smallest prime factor of 60:
- 60 is also even, so divide by 2:
- 60 is also even, so divide by 2:
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Next, find the smallest prime factor of 30:
- 30 is still even, so divide by 2:
- 30 is still even, so divide by 2:
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Now, find the smallest prime factor of 15:
- 15 is not even, but it is divisible by 3:
- 15 is not even, but it is divisible by 3:
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Finally, 5 is a prime number.
So, the complete prime factorization of 120 is:
Now, listing the factors in order from least to greatest:
Each number that appears in the prime factorization of 120 is:
Would you like more details or have any questions?
Here are five related questions to explore further:
- What is the prime factorization of 180?
- How can you quickly identify if a number is prime?
- What is the highest power of 2 that divides 120?
- Can a prime factorization include numbers other than primes?
- How does prime factorization help in finding the greatest common divisor (GCD)?
Tip: When performing prime factorization, always start with the smallest primes and work upward.
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Math Problem Analysis
Mathematical Concepts
Prime Numbers
Prime Factorization
Formulas
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Theorems
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Suitable Grade Level
Grades 4-6