LCM of 359, 688, 638, 645
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 359, 688, 638, 645 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 359, 688, 638, 645. So, keep reading to learn more.
Given numbers are 359,688,638,645
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 359,688,638,645 is 1181856720.
Find LCM of 359,688,638,645 with Prime Factorization
| 2 | 359, 688, 638, 645 |
| 43 | 359, 344, 319, 645 |
| 359, 8, 319, 15 |
Multiply the prime numbers at the bottom and the left side.
2 x 43 x 359 x 8 x 319 x 15 = 1181856720
Therefore, the lowest common multiple of 359,688,638,645 is 1181856720.
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.
359 x 688 x 638 x 645 = 101639677920
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.
359 : 1, 359
688 : 1, 2, 4, 8, 16, 43, 86, 172, 344, 688
638 : 1, 2, 11, 22, 29, 58, 319, 638
645 : 1, 3, 5, 15, 43, 129, 215, 645
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 359,688,638,645, is 1.
Now, the common factors can be found like this.
359:359
688:2x 2x 2x 2x 43
638:2x 11x 29
645:3x 5x 43
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 43 = 86
Therefore, the value for common factors is 86.
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 = 101639677920/(1x86)
LCM = 101639677920/86
LCM = 1181856720
Thus, we can understand that the LCM of 359,688,638,645 is 1181856720.
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FAQs on LCM of 359, 688, 638, 645
1. What is the LCM of 359, 688, 638, 645?
Answer: LCM of 359, 688, 638, 645 is 1181856720.
2. How to calculate the LCM of 359, 688, 638, 645?
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 359, 688, 638, 645.
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}.