LCM of 628, 985, 400, 217, 644
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 628, 985, 400, 217, 644 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 628, 985, 400, 217, 644. So, keep reading to learn more.
Given numbers are 628,985,400,217,644
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 628,985,400,217,644 is 61746655600.
Find LCM of 628,985,400,217,644 with Prime Factorization
| 2 | 628, 985, 400, 217, 644 |
| 2 | 314, 985, 200, 217, 322 |
| 5 | 157, 985, 100, 217, 161 |
| 7 | 157, 197, 20, 217, 161 |
| 157, 197, 20, 31, 23 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 5 x 7 x 157 x 197 x 20 x 31 x 23 = 61746655600
Therefore, the lowest common multiple of 628,985,400,217,644 is 61746655600.
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.
628 x 985 x 400 x 217 x 644 = 34578127136000
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.
628 : 1, 2, 4, 157, 314, 628
985 : 1, 5, 197, 985
400 : 1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400
217 : 1, 7, 31, 217
644 : 1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 628,985,400,217,644, is 1.
Now, the common factors can be found like this.
628:2x 2x 157
985:5x 197
400:2x 2x 2x 2x 5x 5
217:7x 31
644:2x 2x 7x 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 2x 2x 5x 7 = 560
Therefore, the value for common factors is 560.
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 = 34578127136000/(1x560)
LCM = 34578127136000/560
LCM = 61746655600
Thus, we can understand that the LCM of 628,985,400,217,644 is 61746655600.
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FAQs on LCM of 628, 985, 400, 217, 644
1. What is the LCM of 628, 985, 400, 217, 644?
Answer: LCM of 628, 985, 400, 217, 644 is 61746655600.
2. How to calculate the LCM of 628, 985, 400, 217, 644?
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 628, 985, 400, 217, 644.
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}.