LCM of 397, 171, 646, 891
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 397, 171, 646, 891 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, 171, 646, 891. So, keep reading to learn more.
Given numbers are 397,171,646,891
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 397,171,646,891 is 228507642.
Find LCM of 397,171,646,891 with Prime Factorization
| 3 | 397, 171, 646, 891 |
| 3 | 397, 57, 646, 297 |
| 19 | 397, 19, 646, 99 |
| 397, 1, 34, 99 |
Multiply the prime numbers at the bottom and the left side.
3 x 3 x 19 x 397 x 1 x 34 x 99 = 228507642
Therefore, the lowest common multiple of 397,171,646,891 is 228507642.
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 171 x 646 x 891 = 39074806782
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
171 : 1, 3, 9, 19, 57, 171
646 : 1, 2, 17, 19, 34, 38, 323, 646
891 : 1, 3, 9, 11, 27, 33, 81, 99, 297, 891
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 397,171,646,891, is 1.
Now, the common factors can be found like this.
397:397
171:3x 3x 19
646:2x 17x 19
891:3x 3x 3x 3x 11
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3x 3x 19 = 171
Therefore, the value for common factors is 171.
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 = 39074806782/(1x171)
LCM = 39074806782/171
LCM = 228507642
Thus, we can understand that the LCM of 397,171,646,891 is 228507642.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 397, 171, 646, 891
1. What is the LCM of 397, 171, 646, 891?
Answer: LCM of 397, 171, 646, 891 is 228507642.
2. How to calculate the LCM of 397, 171, 646, 891?
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, 171, 646, 891.
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}.