LCM of 761, 528, 561, 646
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 761, 528, 561, 646 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 761, 528, 561, 646. So, keep reading to learn more.
Given numbers are 761,528,561,646
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 761,528,561,646 is 129783984.
Find LCM of 761,528,561,646 with Prime Factorization
| 2 | 761, 528, 561, 646 |
| 3 | 761, 264, 561, 323 |
| 11 | 761, 88, 187, 323 |
| 17 | 761, 8, 17, 323 |
| 761, 8, 1, 19 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 11 x 17 x 761 x 8 x 1 x 19 = 129783984
Therefore, the lowest common multiple of 761,528,561,646 is 129783984.
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.
761 x 528 x 561 x 646 = 145617630048
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.
761 : 1, 761
528 : 1, 2, 3, 4, 6, 8, 11, 12, 16, 22, 24, 33, 44, 48, 66, 88, 132, 176, 264, 528
561 : 1, 3, 11, 17, 33, 51, 187, 561
646 : 1, 2, 17, 19, 34, 38, 323, 646
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 761,528,561,646, is 1.
Now, the common factors can be found like this.
761:761
528:2x 2x 2x 2x 3x 11
561:3x 11x 17
646:2x 17x 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 3x 11x 17 = 1122
Therefore, the value for common factors is 1122.
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 = 145617630048/(1x1122)
LCM = 145617630048/1122
LCM = 129783984
Thus, we can understand that the LCM of 761,528,561,646 is 129783984.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 761, 528, 561, 646
1. What is the LCM of 761, 528, 561, 646?
Answer: LCM of 761, 528, 561, 646 is 129783984.
2. How to calculate the LCM of 761, 528, 561, 646?
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 761, 528, 561, 646.
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}.