LCM of 172, 664, 645, 391
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 172, 664, 645, 391 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 172, 664, 645, 391. So, keep reading to learn more.
Given numbers are 172,664,645,391
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 172,664,645,391 is 167457480.
Find LCM of 172,664,645,391 with Prime Factorization
| 2 | 172, 664, 645, 391 |
| 2 | 86, 332, 645, 391 |
| 43 | 43, 166, 645, 391 |
| 1, 166, 15, 391 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 43 x 1 x 166 x 15 x 391 = 167457480
Therefore, the lowest common multiple of 172,664,645,391 is 167457480.
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.
172 x 664 x 645 x 391 = 28802686560
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.
172 : 1, 2, 4, 43, 86, 172
664 : 1, 2, 4, 8, 83, 166, 332, 664
645 : 1, 3, 5, 15, 43, 129, 215, 645
391 : 1, 17, 23, 391
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 172,664,645,391, is 1.
Now, the common factors can be found like this.
172:2x 2x 43
664:2x 2x 2x 83
645:3x 5x 43
391:17x 23
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 2x 43 = 172
Therefore, the value for common factors is 172.
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 = 28802686560/(1x172)
LCM = 28802686560/172
LCM = 167457480
Thus, we can understand that the LCM of 172,664,645,391 is 167457480.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 172, 664, 645, 391
1. What is the LCM of 172, 664, 645, 391?
Answer: LCM of 172, 664, 645, 391 is 167457480.
2. How to calculate the LCM of 172, 664, 645, 391?
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 172, 664, 645, 391.
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}.