LCM( 161, 207 ) = 1449
Step 1: Write down factorisation of each number:
161 = 7 · 23
207 = 3 · 3 · 23
Step 2 : Match primes vertically:
161 | = | 7 | · | 23 | ||||
207 | = | 3 | · | 3 | · | 23 |
Step 3 : Bring down numbers in each column and multiply to get LCM:
161 | = | 7 | · | 23 | ||||||
207 | = | 3 | · | 3 | · | 23 | ||||
LCM | = | 3 | · | 3 | · | 7 | · | 23 | = | 1449 |
This solution can be visualized using a Venn diagram.
The LCM is equal to the product of all the numbers on the diagram.