Question
Find Least Common Multiple of 1759 and 73139220 using division method..
Answer
LCM( 1759, 73139220 ) = 73139220
Explanation
Step 1 : Write the given numbers in a horizontal line.
| 1759 | 73139220 |
Step 2 : Divide the given numbers by smallest prime number. In this example we can divide by 2.
(if any number is not divisible by 2, write it down unchanged)
| 2 | 1759 | 73139220 |
| 1759 | 36569610 |
Step 3 : Continue dividing by prime numbers till we get 1 in all columns.
| 2 | 1759 | 73139220 |
| 2 | 1759 | 36569610 |
| 3 | 1759 | 18284805 |
| 3 | 1759 | 6094935 |
| 3 | 1759 | 2031645 |
| 5 | 1759 | 677215 |
| 7 | 1759 | 135443 |
| 11 | 1759 | 19349 |
| 1759 | 1759 | 1759 |
| 1 | 1 |
Step 4 : Multiply numbers in first column to get LCM.
LCM( 1759, 73139220 ) = 2 · 2 · 3 · 3 · 3 · 5 · 7 · 11 · 1759 = 73139220 .
This solution can be visualized using a Venn diagram.
The LCM is equal to the product of all the numbers on the diagram.
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