LCM of 642, 685, 701, 700
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 642, 685, 701, 700 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 642, 685, 701, 700. So, keep reading to learn more.
Given numbers are 642,685,701,700
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 642,685,701,700 is 21579513900.
Find LCM of 642,685,701,700 with Prime Factorization
| 2 | 642, 685, 701, 700 |
| 5 | 321, 685, 701, 350 |
| 321, 137, 701, 70 |
Multiply the prime numbers at the bottom and the left side.
2 x 5 x 321 x 137 x 701 x 70 = 21579513900
Therefore, the lowest common multiple of 642,685,701,700 is 21579513900.
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.
642 x 685 x 701 x 700 = 215795139000
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.
642 : 1, 2, 3, 6, 107, 214, 321, 642
685 : 1, 5, 137, 685
701 : 1, 701
700 : 1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 175, 350, 700
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 642,685,701,700, is 1.
Now, the common factors can be found like this.
642:2x 3x 107
685:5x 137
701:701
700:2x 2x 5x 5x 7
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 5 = 10
Therefore, the value for common factors is 10.
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 = 215795139000/(1x10)
LCM = 215795139000/10
LCM = 21579513900
Thus, we can understand that the LCM of 642,685,701,700 is 21579513900.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 642, 685, 701, 700
1. What is the LCM of 642, 685, 701, 700?
Answer: LCM of 642, 685, 701, 700 is 21579513900.
2. How to calculate the LCM of 642, 685, 701, 700?
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 642, 685, 701, 700.
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}.