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Last updated on November 30th, 2024

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LCM of 2 and 3

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The Least common multiple (LCM) is the smallest number that is divisible by the numbers 2 and 3. The LCM can be found using the listing multiples method, the prime factorization and/or division methods. LCM helps to solve problems with fractions and scenarios like scheduling or aligning repeating cycle of events.

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What is the LCM of 2 and 3?

The LCM of 2 and 3 is the smallest positive integer, a multiple of both numbers.

By finding the LCM, we can simplify the arithmetic operations with fractions to equate the denominators. 
 

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How to Find the LCM of 2 and 3?

There are various methods to find the LCM, Listing method, prime factorization method and division method are explained below; 
 

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LCM of 2 and 3 using the Listing Multiples Method

The LCM of 2 and 3 can be found using the following steps:


Step 1: Write down the multiples of each number


Multiples of 2 = 2, 4, 6, 8, … 


Multiples of 3 = 3, 6, 9, 12, 15, 18, …


Step 2: Ascertain the smallest multiple from the listed multiples


The least common multiple is 6.

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LCM of 2 and 3 using the Prime Factorization Method

The prime factors of each number are written, and then the highest power of the prime factors is multiplied to get the LCM.


Step 1: Find the prime factors of the numbers:


 Prime factorization of 2 = 2


Prime factorization of 3 = 3


Step 2:Take the highest powers of each prime factor and multiply the highest powers to get the LCM:  


 LCM(2,3) = 6
 

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LCM of 2 and 3 using the Division Method

This method involves dividing both numbers by their common prime factors until no further division is possible, then multiplying the divisors to find the LCM.

Step 1: Write the numbers, divide by common prime factors and multiply the divisors.

 

 

Step 2: 2 and 3 are only prime factors in this case:

 

 

2 × 3 = 6

 

Thus, LCM(2,3) = 6
 

 

 

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Important glossaries for the number of 2 and 3

  • Multiple: A number and any integer multiplied. 

 

  • Prime Factor: A natural number (other than 1) that has factors that are one and itself.

 

  • Prime Factorization: The process of breaking down a number into its prime factors is called Prime Factorization. 

 

  • Co-prime numbers: When the only positive integer that is a divisor of them both is 1, a number is co-prime. 

 

  • Relatively Prime Numbers: Numbers that have no common factors other than 1.

 

  • Fraction: A representation of a part of a whole.
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