LCM of 620, 689, 618, 971
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 620, 689, 618, 971 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 620, 689, 618, 971. So, keep reading to learn more.
Given numbers are 620,689,618,971
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 620,689,618,971 is 128170660020.
Find LCM of 620,689,618,971 with Prime Factorization
| 2 | 620, 689, 618, 971 |
| 310, 689, 309, 971 |
Multiply the prime numbers at the bottom and the left side.
2 x 310 x 689 x 309 x 971 = 128170660020
Therefore, the lowest common multiple of 620,689,618,971 is 128170660020.
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.
620 x 689 x 618 x 971 = 256341320040
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.
620 : 1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620
689 : 1, 13, 53, 689
618 : 1, 2, 3, 6, 103, 206, 309, 618
971 : 1, 971
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 620,689,618,971, is 1.
Now, the common factors can be found like this.
620:2x 2x 5x 31
689:13x 53
618:2x 3x 103
971:971
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2 = 2
Therefore, the value for common factors is 2.
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 = 256341320040/(1x2)
LCM = 256341320040/2
LCM = 128170660020
Thus, we can understand that the LCM of 620,689,618,971 is 128170660020.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 620, 689, 618, 971
1. What is the LCM of 620, 689, 618, 971?
Answer: LCM of 620, 689, 618, 971 is 128170660020.
2. How to calculate the LCM of 620, 689, 618, 971?
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 620, 689, 618, 971.
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}.