LCM( 18, 27, 45, 53 ) = 14310
Step 1 : Write the given numbers in a horizontal line.
18 | 27 | 45 | 53 |
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 | 18 | 27 | 45 | 53 |
9 | 27 | 45 | 53 |
Step 3 : Continue dividing by prime numbers till we get 1 in all columns.
2 | 18 | 27 | 45 | 53 |
3 | 9 | 27 | 45 | 53 |
3 | 3 | 9 | 15 | 53 |
3 | 1 | 3 | 5 | 53 |
5 | 1 | 1 | 5 | 53 |
53 | 1 | 1 | 1 | 53 |
1 | 1 | 1 | 1 |
Step 4 : Multiply numbers in first column to get LCM.
LCM( 18, 27, 45, 53 ) = 2 · 3 · 3 · 3 · 5 · 53 = 14310 .