# What is the Prime Factor of 126?

Learn how to find the prime factorization of 126, a fundamental concept in mathematics that serves as the foundation for various mathematical operations.

As a fundamental concept in mathematics, prime factorization is the process of breaking down a composite number into its prime factors. It serves as the foundation for various mathematical operations, including finding the greatest common factor, least common multiple, and simplifying fractions. Understanding prime factorization is crucial in solving complex mathematical problems. In this article, we will explore the prime factorization of the number 126.

## Definition of Prime Factorization

Prime factorization is the process of finding the prime numbers that can be multiplied together to obtain the original number. For instance, the prime factorization of 12 is 2 x 2 x 3, meaning that 12 is the product of two twos and one three. Every composite number has a unique prime factorization.

To obtain the prime factorization of a number, we can divide it by its smallest prime factor and continue dividing the quotient by its smallest prime factor until we obtain a quotient of 1. The prime factors are the divisors used in this process.

For example, to obtain the prime factorization of 60, we divide it by 2, resulting in 30. We divide 30 by 2, resulting in 15. Since 15 is not divisible by 2, we divide it by its smallest prime factor, 3, which results in 5. Since 5 is a prime number, we stop dividing. Thus, the prime factorization of 60 is 2 x 2 x 3 x 5.

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Understanding prime factorization allows us to solve various mathematical problems, including finding the greatest common factor, simplifying fractions, and finding the least common multiple.

## Finding the Factors of 126

Before we can find the prime factors of 126, we must first find its factors. Factors are the numbers that can be multiplied together to obtain the original number. To find the factors of 126, we need to find all the numbers that divide 126 evenly.

One method of finding the factors of a number is by dividing the number by all the numbers less than or equal to the square root of the number. Any factor less than or equal to the square root of the number will have a corresponding factor greater than the square root.

The square root of 126 is approximately 11.22. Therefore, we can divide 126 by all the numbers less than or equal to 11.22 to obtain its factors.

The factors of 126 are 1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, and 126.

## Identifying Prime Factors of 126

Prime factors are the prime numbers that can be multiplied together to obtain the original number. For example, the prime factors of 12 are 2 and 3 because 2 x 2 x 3 = 12. Prime factors are important in mathematics because they are the building blocks of all composite numbers.

To identify the prime factors of 126, we need to break down the number into its prime factors. One way to do this is by dividing the number by its smallest prime factor and continuing to divide the quotient by its smallest prime factor until we obtain a quotient of 1. The prime factors are the divisors used in this process.

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To identify the prime factors of 126, we can start by dividing it by 2, which gives us 63. Since 63 is not divisible by 2, we try dividing it by its smallest prime factor, which is 3. We get 21 as the quotient, which is also divisible by 3. Dividing 21 by 3 gives us 7, which is a prime number. Therefore, the prime factors of 126 are 2, 3, and 7.

## Prime Factorization of 126

Using the prime factors of 126, we can perform prime factorization to write 126 as the product of its prime factors. To do this, we express 126 as the product of its prime factors raised to their respective powers.

The prime factorization of 126 is 2 x 3 x 3 x 7. We write 126 in exponential form as 2^1 x 3^2 x 7^1. The exponents represent the number of times the prime factors are multiplied together.

Prime factorization is useful in simplifying fractions and finding the greatest common factor and least common multiple of a set of numbers. It is also important in cryptography and the study of prime numbers.

In conclusion, the prime factorization of 126 is 2^1 x 3^2 x 7^1, and its prime factors are 2, 3, and 7. Understanding prime factorization is essential in solving various mathematical problems and is a fundamental concept in number theory.

## Prime Factorization of 126

Now that we have found the factors of 126, we can perform its prime factorization. To do this, we divide 126 by its smallest prime factor, which is 2. We get 63 as the quotient. We continue this process by dividing 63 by its smallest prime factor, which is 3. We get 21 as the quotient. We then divide 21 by 3, which gives us 7. Since 7 is a prime number, we stop dividing.

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Therefore, the prime factorization of 126 is 2 x 3 x 3 x 7, which can be written in exponential form as 2 x 3² x 7. This means that 126 is the product of two twos, two threes, and one seven.

Knowing the prime factorization of 126 allows us to solve various mathematical problems. For instance, we can use it to find the greatest common factor and least common multiple of multiple numbers.

## Conclusion

In conclusion, understanding prime factorization is crucial in mathematics. It allows us to solve various mathematical problems, including finding the greatest common factor, least common multiple, and simplifying fractions. In this article, we explored the prime factorization of the number 126. After finding its factors, we performed its prime factorization and obtained 2 x 3² x 7 as its prime factorization. Knowing the prime factorization of 126 enables us to solve various mathematical problems with ease.

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