LCM( 72, 124 ) = 2232
Step 1 : Place the numbers inside division bar:
72 | 124 |
Step 2 : Find a prime number which divides both numbers.
In this example we can divide by 2. If any number is not divisible by 2 write it down unchanged.
2 | 72 | 124 |
36 | 62 |
Step 3 : Repeat Step 2 until you can no longer divide.
2 | 72 | 124 |
2 | 36 | 62 |
18 | 31 |
Since there are no primes that divides at least two of given numbers, we conclude that the LCM is a product of starting numbers.
LCM = 72 · 124 = 2232
This solution can be visualized using a Venn diagram.
The LCM is equal to the product of all the numbers on the diagram.