LCM of 568, 691, 355, 420
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 568, 691, 355, 420 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 568, 691, 355, 420. So, keep reading to learn more.
Given numbers are 568,691,355,420
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 568,691,355,420 is 41211240.
Find LCM of 568,691,355,420 with Prime Factorization
| 2 | 568, 691, 355, 420 |
| 2 | 284, 691, 355, 210 |
| 5 | 142, 691, 355, 105 |
| 71 | 142, 691, 71, 21 |
| 2, 691, 1, 21 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 5 x 71 x 2 x 691 x 1 x 21 = 41211240
Therefore, the lowest common multiple of 568,691,355,420 is 41211240.
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.
568 x 691 x 355 x 420 = 58519960800
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.
568 : 1, 2, 4, 8, 71, 142, 284, 568
691 : 1, 691
355 : 1, 5, 71, 355
420 : 1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 568,691,355,420, is 1.
Now, the common factors can be found like this.
568:2x 2x 2x 71
691:691
355:5x 71
420:2x 2x 3x 5x 7
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 5x 71 = 1420
Therefore, the value for common factors is 1420.
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 = 58519960800/(1x1420)
LCM = 58519960800/1420
LCM = 41211240
Thus, we can understand that the LCM of 568,691,355,420 is 41211240.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 568, 691, 355, 420
1. What is the LCM of 568, 691, 355, 420?
Answer: LCM of 568, 691, 355, 420 is 41211240.
2. How to calculate the LCM of 568, 691, 355, 420?
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 568, 691, 355, 420.
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}.