LCM of 671, 644, 391, 345
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 671, 644, 391, 345 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 671, 644, 391, 345. So, keep reading to learn more.
Given numbers are 671,644,391,345
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 671,644,391,345 is 110191620.
Find LCM of 671,644,391,345 with Prime Factorization
| 23 | 671, 644, 391, 345 |
| 671, 28, 17, 15 |
Multiply the prime numbers at the bottom and the left side.
23 x 671 x 28 x 17 x 15 = 110191620
Therefore, the lowest common multiple of 671,644,391,345 is 110191620.
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.
671 x 644 x 391 x 345 = 58291366980
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.
671 : 1, 11, 61, 671
644 : 1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644
391 : 1, 17, 23, 391
345 : 1, 3, 5, 15, 23, 69, 115, 345
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 671,644,391,345, is 1.
Now, the common factors can be found like this.
671:11x 61
644:2x 2x 7x 23
391:17x 23
345:3x 5x 23
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
23x 23 = 529
Therefore, the value for common factors is 529.
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 = 58291366980/(1x529)
LCM = 58291366980/529
LCM = 110191620
Thus, we can understand that the LCM of 671,644,391,345 is 110191620.
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FAQs on LCM of 671, 644, 391, 345
1. What is the LCM of 671, 644, 391, 345?
Answer: LCM of 671, 644, 391, 345 is 110191620.
2. How to calculate the LCM of 671, 644, 391, 345?
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 671, 644, 391, 345.
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}.