LCM of 789, 147, 161, 355, 638
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 789, 147, 161, 355, 638 with the LCM of Two or More Numbers Calculator. Here we are teaching you two different methods through which you can calculate the LCM of 789, 147, 161, 355, 638. So, keep reading to learn more.
Given numbers are 789,147,161,355,638
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 789,147,161,355,638 is 201395587470.
Find LCM of 789,147,161,355,638 with Prime Factorization
| 3 | 789, 147, 161, 355, 638 |
| 7 | 263, 49, 161, 355, 638 |
| 263, 7, 23, 355, 638 |
Multiply the prime numbers at the bottom and the left side.
3 x 7 x 263 x 7 x 23 x 355 x 638 = 201395587470
Therefore, the lowest common multiple of 789,147,161,355,638 is 201395587470.
LCM formula is LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}
Firstly, we have to find the product of all the numbers.
789 x 147 x 161 x 355 x 638 = 4229307336870
Then, let us find the GCF of these five numbers. To do so, we have to list down the factors for each number and choose the highest factor that is in all of the lists.
789 : 1, 3, 263, 789
147 : 1, 3, 7, 21, 49, 147
161 : 1, 7, 23, 161
355 : 1, 5, 71, 355
638 : 1, 2, 11, 22, 29, 58, 319, 638
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 789,147,161,355,638, is 1.
Now, the common factors can be found like this.
789:3x 263
147:3x 7x 7
161:7x 23
355:5x 71
638:2x 11x 29
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3x 7 = 21
Therefore, the value for common factors is 21.
Now that we have all the elements of the formula, we can plug them in to calculate the LCM.
LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}
LCM = 4229307336870/(1x21)
LCM = 4229307336870/21
LCM = 201395587470
Thus, we can understand that the LCM of 789,147,161,355,638 is 201395587470.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 789, 147, 161, 355, 638
1. What is the LCM of 789, 147, 161, 355, 638?
Answer: LCM of 789, 147, 161, 355, 638 is 201395587470.
2. How to calculate the LCM of 789, 147, 161, 355, 638?
The LCM can be found using two methods. You can either use the LCM formula or the prime factorization method to calculate the LCM of 789, 147, 161, 355, 638.
3. What is the LCM formula?
The LCM formula is LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}.