LCM of 942, 646, 645, 561
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 942, 646, 645, 561 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 942, 646, 645, 561. So, keep reading to learn more.
Given numbers are 942,646,645,561
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 942,646,645,561 is 719589090.
Find LCM of 942,646,645,561 with Prime Factorization
| 2 | 942, 646, 645, 561 |
| 3 | 471, 323, 645, 561 |
| 17 | 157, 323, 215, 187 |
| 157, 19, 215, 11 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 17 x 157 x 19 x 215 x 11 = 719589090
Therefore, the lowest common multiple of 942,646,645,561 is 719589090.
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.
942 x 646 x 645 x 561 = 220194261540
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.
942 : 1, 2, 3, 6, 157, 314, 471, 942
646 : 1, 2, 17, 19, 34, 38, 323, 646
645 : 1, 3, 5, 15, 43, 129, 215, 645
561 : 1, 3, 11, 17, 33, 51, 187, 561
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 942,646,645,561, is 1.
Now, the common factors can be found like this.
942:2x 3x 157
646:2x 17x 19
645:3x 5x 43
561:3x 11x 17
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 3x 17 = 306
Therefore, the value for common factors is 306.
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 = 220194261540/(1x306)
LCM = 220194261540/306
LCM = 719589090
Thus, we can understand that the LCM of 942,646,645,561 is 719589090.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 942, 646, 645, 561
1. What is the LCM of 942, 646, 645, 561?
Answer: LCM of 942, 646, 645, 561 is 719589090.
2. How to calculate the LCM of 942, 646, 645, 561?
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 942, 646, 645, 561.
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}.