LCM of 397, 798, 221, 646
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 397, 798, 221, 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 397, 798, 221, 646. So, keep reading to learn more.
Given numbers are 397,798,221,646
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 397,798,221,646 is 70014126.
Find LCM of 397,798,221,646 with Prime Factorization
| 2 | 397, 798, 221, 646 |
| 17 | 397, 399, 221, 323 |
| 19 | 397, 399, 13, 19 |
| 397, 21, 13, 1 |
Multiply the prime numbers at the bottom and the left side.
2 x 17 x 19 x 397 x 21 x 13 x 1 = 70014126
Therefore, the lowest common multiple of 397,798,221,646 is 70014126.
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.
397 x 798 x 221 x 646 = 45229125396
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.
397 : 1, 397
798 : 1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 114, 133, 266, 399, 798
221 : 1, 13, 17, 221
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 397,798,221,646, is 1.
Now, the common factors can be found like this.
397:397
798:2x 3x 7x 19
221:13x 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 17x 19 = 646
Therefore, the value for common factors is 646.
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 = 45229125396/(1x646)
LCM = 45229125396/646
LCM = 70014126
Thus, we can understand that the LCM of 397,798,221,646 is 70014126.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 397, 798, 221, 646
1. What is the LCM of 397, 798, 221, 646?
Answer: LCM of 397, 798, 221, 646 is 70014126.
2. How to calculate the LCM of 397, 798, 221, 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 397, 798, 221, 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}.