LCM of 647, 193, 378, 678, 921
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 647, 193, 378, 678, 921 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 647, 193, 378, 678, 921. So, keep reading to learn more.
Given numbers are 647,193,378,678,921
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 647,193,378,678,921 is 1637458147458.
Find LCM of 647,193,378,678,921 with Prime Factorization
| 2 | 647, 193, 378, 678, 921 |
| 3 | 647, 193, 189, 339, 921 |
| 647, 193, 63, 113, 307 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 647 x 193 x 63 x 113 x 307 = 1637458147458
Therefore, the lowest common multiple of 647,193,378,678,921 is 1637458147458.
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.
647 x 193 x 378 x 678 x 921 = 29474246654244
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.
647 : 1, 647
193 : 1, 193
378 : 1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 126, 189, 378
678 : 1, 2, 3, 6, 113, 226, 339, 678
921 : 1, 3, 307, 921
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 647,193,378,678,921, is 1.
Now, the common factors can be found like this.
647:647
193:193
378:2x 3x 3x 3x 7
678:2x 3x 113
921:3x 307
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 3x 3 = 18
Therefore, the value for common factors is 18.
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 = 29474246654244/(1x18)
LCM = 29474246654244/18
LCM = 1637458147458
Thus, we can understand that the LCM of 647,193,378,678,921 is 1637458147458.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 647, 193, 378, 678, 921
1. What is the LCM of 647, 193, 378, 678, 921?
Answer: LCM of 647, 193, 378, 678, 921 is 1637458147458.
2. How to calculate the LCM of 647, 193, 378, 678, 921?
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 647, 193, 378, 678, 921.
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}.