LCM of 668, 646, 921, 760
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 668, 646, 921, 760 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 668, 646, 921, 760. So, keep reading to learn more.
Given numbers are 668,646,921,760
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 668,646,921,760 is 1987186440.
Find LCM of 668,646,921,760 with Prime Factorization
| 2 | 668, 646, 921, 760 |
| 2 | 334, 323, 921, 380 |
| 19 | 167, 323, 921, 190 |
| 167, 17, 921, 10 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 19 x 167 x 17 x 921 x 10 = 1987186440
Therefore, the lowest common multiple of 668,646,921,760 is 1987186440.
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.
668 x 646 x 921 x 760 = 302052338880
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.
668 : 1, 2, 4, 167, 334, 668
646 : 1, 2, 17, 19, 34, 38, 323, 646
921 : 1, 3, 307, 921
760 : 1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 668,646,921,760, is 1.
Now, the common factors can be found like this.
668:2x 2x 167
646:2x 17x 19
921:3x 307
760:2x 2x 2x 5x 19
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 19 = 152
Therefore, the value for common factors is 152.
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 = 302052338880/(1x152)
LCM = 302052338880/152
LCM = 1987186440
Thus, we can understand that the LCM of 668,646,921,760 is 1987186440.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 668, 646, 921, 760
1. What is the LCM of 668, 646, 921, 760?
Answer: LCM of 668, 646, 921, 760 is 1987186440.
2. How to calculate the LCM of 668, 646, 921, 760?
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 668, 646, 921, 760.
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}.