Question
Find Least Common Multiple of 1763 and 868559580 using division method..
Answer
LCM( 1763, 868559580 ) = 868559580
Explanation
Step 1 : Write the given numbers in a horizontal line.
| 1763 | 868559580 |
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 | 1763 | 868559580 |
| 1763 | 434279790 |
Step 3 : Continue dividing by prime numbers till we get 1 in all columns.
| 2 | 1763 | 868559580 |
| 2 | 1763 | 434279790 |
| 3 | 1763 | 217139895 |
| 3 | 1763 | 72379965 |
| 5 | 1763 | 24126655 |
| 7 | 1763 | 4825331 |
| 17 | 1763 | 689333 |
| 23 | 1763 | 40549 |
| 41 | 1763 | 1763 |
| 43 | 43 | 43 |
| 1 | 1 |
Step 4 : Multiply numbers in first column to get LCM.
LCM( 1763, 868559580 ) = 2 · 2 · 3 · 3 · 5 · 7 · 17 · 23 · 41 · 43 = 868559580 .
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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