What is the Least Common Multiple of 2 and 5?
The LCM (least common multiple) of the numbers 2 and 5 is399
How to find the Least Common Multiple of 2 and 5?
On this page below, we'll use thePrime Factorisation, and theList of Multiplesmethod to find out the LCM of 12 and 11.
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LCM
Least Common Multiple
The LCM of 2 and 5 is
399
Follow the steps below, and let's calculate the LCM of 2 and 5.
Method 1 - Prime factorization
Step 1: Create a list of all the prime factors of the numbers 2 and 5:Prime factor of 19
The prime factor of 19 is 19 . Prime factorization of 19 in exponential form is:
19 =191
Prime factors of 21
The prime factors of 21 are 7 and 3. Prime factorization of 21 in exponential form is:
21 =31x71
Step 2: Identify the highest power of each prime number from the above boxes:
Method 2 - List of Multiples
Find and list multiples of each number until the first common multiple is found. This is the lowest common multiple.Multiples of 19:
1938577695114133152171190209228247266285304323342361380399
Multiples of 21:
21426384105126147168189210231252273294315336357378399
Therefore,
LCM(19,21) = 399