LCM of 782, 272, 644
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 782, 272, 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 782, 272, 644. So, keep reading to learn more.
Given numbers are 782,272,644
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 782,272,644 is 43792.
Find LCM of 782,272,644 with Prime Factorization
| 2 | 782, 272, 644 |
| 2 | 391, 136, 322 |
| 17 | 391, 68, 161 |
| 23 | 23, 4, 161 |
| 1, 4, 7 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 17 x 23 x 1 x 4 x 7 = 43792
Therefore, the lowest common multiple of 782,272,644 is 43792.
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.
782 x 272 x 644 = 136981376
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.
782 : 1, 2, 17, 23, 34, 46, 391, 782
272 : 1, 2, 4, 8, 16, 17, 34, 68, 136, 272
644 : 1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644
2 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 782,272,644, is 2.
Now, the common factors can be found like this.
782:2x 17x 23
272:2x 2x 2x 2x 17
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 17x 23 = 1564
Therefore, the value for common factors is 1564.
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 = 136981376/(2x1564)
LCM = 136981376/3128
LCM = 43792
Thus, we can understand that the LCM of 782,272,644 is 43792.
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FAQs on LCM of 782, 272, 644
1. What is the LCM of 782, 272, 644?
Answer: LCM of 782, 272, 644 is 43792.
2. How to calculate the LCM of 782, 272, 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 782, 272, 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}.