LCM of 662, 428, 780, 689
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 662, 428, 780, 689 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 662, 428, 780, 689. So, keep reading to learn more.
Given numbers are 662,428,780,689
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 662,428,780,689 is 1464138780.
Find LCM of 662,428,780,689 with Prime Factorization
| 2 | 662, 428, 780, 689 |
| 2 | 331, 214, 390, 689 |
| 13 | 331, 107, 195, 689 |
| 331, 107, 15, 53 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 13 x 331 x 107 x 15 x 53 = 1464138780
Therefore, the lowest common multiple of 662,428,780,689 is 1464138780.
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.
662 x 428 x 780 x 689 = 152270433120
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.
662 : 1, 2, 331, 662
428 : 1, 2, 4, 107, 214, 428
780 : 1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780
689 : 1, 13, 53, 689
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 662,428,780,689, is 1.
Now, the common factors can be found like this.
662:2x 331
428:2x 2x 107
780:2x 2x 3x 5x 13
689:13x 53
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 2x 13 = 104
Therefore, the value for common factors is 104.
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 = 152270433120/(1x104)
LCM = 152270433120/104
LCM = 1464138780
Thus, we can understand that the LCM of 662,428,780,689 is 1464138780.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 662, 428, 780, 689
1. What is the LCM of 662, 428, 780, 689?
Answer: LCM of 662, 428, 780, 689 is 1464138780.
2. How to calculate the LCM of 662, 428, 780, 689?
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 662, 428, 780, 689.
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}.