LCM of 928, 791, 644, 372, 421
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 928, 791, 644, 372, 421 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 928, 791, 644, 372, 421. So, keep reading to learn more.
Given numbers are 928,791,644,372,421
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 928,791,644,372,421 is 661024170912.
Find LCM of 928,791,644,372,421 with Prime Factorization
| 2 | 928, 791, 644, 372, 421 |
| 2 | 464, 791, 322, 186, 421 |
| 7 | 232, 791, 161, 93, 421 |
| 232, 113, 23, 93, 421 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 7 x 232 x 113 x 23 x 93 x 421 = 661024170912
Therefore, the lowest common multiple of 928,791,644,372,421 is 661024170912.
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.
928 x 791 x 644 x 372 x 421 = 74034707142144
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.
928 : 1, 2, 4, 8, 16, 29, 32, 58, 116, 232, 464, 928
791 : 1, 7, 113, 791
644 : 1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644
372 : 1, 2, 3, 4, 6, 12, 31, 62, 93, 124, 186, 372
421 : 1, 421
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 928,791,644,372,421, is 1.
Now, the common factors can be found like this.
928:2x 2x 2x 2x 2x 29
791:7x 113
644:2x 2x 7x 23
372:2x 2x 3x 31
421:421
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 7 = 112
Therefore, the value for common factors is 112.
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 = 74034707142144/(1x112)
LCM = 74034707142144/112
LCM = 661024170912
Thus, we can understand that the LCM of 928,791,644,372,421 is 661024170912.
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FAQs on LCM of 928, 791, 644, 372, 421
1. What is the LCM of 928, 791, 644, 372, 421?
Answer: LCM of 928, 791, 644, 372, 421 is 661024170912.
2. How to calculate the LCM of 928, 791, 644, 372, 421?
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 928, 791, 644, 372, 421.
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}.