LCM of 689, 861, 624
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 689, 861, 624 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 689, 861, 624. So, keep reading to learn more.
Given numbers are 689,861,624
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 689,861,624 is 9491664.
Find LCM of 689,861,624 with Prime Factorization
| 3 | 689, 861, 624 |
| 13 | 689, 287, 208 |
| 53, 287, 16 |
Multiply the prime numbers at the bottom and the left side.
3 x 13 x 53 x 287 x 16 = 9491664
Therefore, the lowest common multiple of 689,861,624 is 9491664.
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.
689 x 861 x 624 = 370174896
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.
689 : 1, 13, 53, 689
861 : 1, 3, 7, 21, 41, 123, 287, 861
624 : 1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 156, 208, 312, 624
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 689,861,624, is 1.
Now, the common factors can be found like this.
689:13x 53
861:3x 7x 41
624:2x 2x 2x 2x 3x 13
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3x 13 = 39
Therefore, the value for common factors is 39.
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 = 370174896/(1x39)
LCM = 370174896/39
LCM = 9491664
Thus, we can understand that the LCM of 689,861,624 is 9491664.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 689, 861, 624
1. What is the LCM of 689, 861, 624?
Answer: LCM of 689, 861, 624 is 9491664.
2. How to calculate the LCM of 689, 861, 624?
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 689, 861, 624.
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}.